diff --git a/simple/cluster.py b/simple/cluster.py
index aaa76f2..349c790 100644
--- a/simple/cluster.py
+++ b/simple/cluster.py
@@ -25,6 +25,9 @@ def GenerateConfig(context):
             'license': context.properties['license'],
             'cluster': context.properties['cluster'],
             'region': context.properties['region'],
+            'network': context.properties['network'],
+            'dataRAMQuotaPercent': context.properties['dataRAMQuotaPercent'],
+            'indexRAMQuotaPercent': context.properties['indexRAMQuotaPercent'],
         }
         for key in group:
             groupProperties[key] = group[key]
diff --git a/simple/cluster.py.schema b/simple/cluster.py.schema
index ef36dfc..5b3f63c 100644
--- a/simple/cluster.py.schema
+++ b/simple/cluster.py.schema
@@ -43,3 +43,16 @@ properties:
   runtimeconfigName:
     type: string
     description: The runtime config resource name. Used for notifying DM about the deployment status.
+  
+  network:
+    type: string
+    description: GCP VPC network name.
+  
+  dataRAMQuotaPercent:
+    type: integer
+    description: Memory Quota for Data Service (percent of total memory)
+    default: 50
+  indexRAMQuotaPercent:
+    type: integer
+    description: Memory Quota for Index Service (percent of total memory)
+    default: 15
\ No newline at end of file
diff --git a/simple/deployment.py b/simple/deployment.py
index 008a4db..902446d 100644
--- a/simple/deployment.py
+++ b/simple/deployment.py
@@ -29,11 +29,11 @@ def GenerateConfig(context):
                 'couchbaseUsername': context.properties['couchbaseUsername'],
                 'couchbasePassword': context.properties['couchbasePassword'],
                 'license': context.properties['license'],
-                'cluster': cluster['cluster'],
-                'region': cluster['region'],
-                'groups': cluster['groups'],
+                'network': context.properties['network'],
             }
         }
+        for key in cluster:
+            clusterJSON['properties'][key] = cluster[key]
         config['resources'].append(clusterJSON)
 
         for group in cluster['groups']:
@@ -47,18 +47,19 @@ def GenerateConfig(context):
                 'value': '$(ref.%s.text)' % readActionName
             })
 
-
-    firewall = {
-        'name': naming.FirewallName(context),
-        'type': 'compute.v1.firewall',
-        'properties': {
-            'sourceRanges': ['0.0.0.0/0'],
-            'allowed': [{
-                'IPProtocol': 'tcp',
-                'ports': ['8091', '4984', '4985']
-            }]
+    if context.properties['firewall']:
+        firewall = {
+            'name': naming.FirewallName(context),
+            'type': 'compute.v1.firewall',
+            'properties': {
+                'network': 'global/networks/' + context.properties['network'],
+                'sourceRanges': context.properties['firewallSourceRanges'],
+                'allowed': [{
+                    'IPProtocol': 'tcp',
+                    'ports': ['8091', '4984', '4985']
+                }]
+            }
         }
-    }
-    config['resources'].append(firewall)
+        config['resources'].append(firewall)
 
     return config
diff --git a/simple/deployment.py.schema b/simple/deployment.py.schema
index e742cf0..ebf6bcf 100644
--- a/simple/deployment.py.schema
+++ b/simple/deployment.py.schema
@@ -30,3 +30,18 @@ properties:
   clusters:
     type: array
     description: The list of objects, each containing configuration for a single cluster resource.
+  
+  network:
+    type: string
+    description: GCP VPC network name.
+    default: default
+
+  firewall:
+    type: boolean
+    default: true
+
+  firewallSourceRanges:
+    type: array
+    description: Allowed source address ranges for cluster
+    default:
+      - "0.0.0.0/0"
diff --git a/simple/group.py b/simple/group.py
index 783eabc..2b796f8 100644
--- a/simple/group.py
+++ b/simple/group.py
@@ -104,7 +104,7 @@ def GenerateInstanceTemplateConfig(context, runtimeconfigName):
             'properties': {
                 'machineType': context.properties['nodeType'],
                 'networkInterfaces': [{
-                    'network': URL_BASE + context.env['project'] + '/global/networks/default',
+                    'network': 'global/networks/' + context.properties['network'],
                     'accessConfigs': [{
                         'name': 'External NAT',
                         'type': 'ONE_TO_ONE_NAT'
@@ -144,6 +144,8 @@ def GenerateInstanceTemplateConfig(context, runtimeconfigName):
             }
         }
     }
+    if context.properties['subnetwork']:
+        instanceTemplate['properties']['properties']['networkInterfaces'][0]['subnetwork'] = 'regions/' + context.properties['region'] + '/subnetworks/' + context.properties['subnetwork']
     return instanceTemplate
 
 def GenerateInstanceGroupManagerConfig(context, instanceTemplateName, instanceGroupTargetSize, externalIpCreateActionName):
@@ -222,6 +224,8 @@ def GenerateStartupScript(context):
         script += 'couchbaseUsername="' + context.properties['couchbaseUsername'] + '"\n'
         script += 'couchbasePassword="' + context.properties['couchbasePassword'] + '"\n'
         script += 'nodeCount="' + str(context.properties['clusterNodesCount']) + '"\n'
+        script += 'dataRAMQuotaPercent="' + str(context.properties['dataRAMQuotaPercent']) + '"\n'
+        script += 'indexRAMQuotaPercent="' + str(context.properties['indexRAMQuotaPercent']) + '"\n'
 
         servicesParameter=''
         for service in services:
diff --git a/simple/group.py.schema b/simple/group.py.schema
index b73c1c5..60d8b38 100644
--- a/simple/group.py.schema
+++ b/simple/group.py.schema
@@ -26,8 +26,11 @@ properties:
     description: Type of Couchbase license to be supported by the deployment.
   serverVersion:
     type: string
-    default: 5.5.0
+    default: 5.5.3
     enum:
+      - 6.0.1
+      - 6.0.0
+      - 5.5.3
       - 5.5.0
       - 5.1.0
       - 5.0.1
@@ -80,4 +83,16 @@ properties:
   services:
     type: array
     description: A list of Couchbase services to be included in the instance group.
+  network:
+    type: string
+    description: GCP VPC network name.
+  subnetwork:
+    type: string
+    description: GCP VPN subnet name (mandatory if deploying on a network in custom subnet mode).
 
+  dataRAMQuotaPercent:
+    type: integer
+    description: Memory Quota for Data Service (percent of total memory)
+  indexRAMQuotaPercent:
+    type: integer
+    description: Memory Quota for Index Service (percent of total memory)
diff --git a/simple/server.sh b/simple/server.sh
index 2732dd2..9cfa6f5 100644
--- a/simple/server.sh
+++ b/simple/server.sh
@@ -130,8 +130,8 @@ echo "Running couchbase-cli node-init"
 if [[ $rallyPrivateDNS == $NODE_PRIVATE_DNS ]]
 then
   totalRAM=$(grep MemTotal /proc/meminfo | awk '{print $2}')
-  dataRAM=$((50 * $totalRAM / 100000))
-  indexRAM=$((15 * $totalRAM / 100000))
+  dataRAM=$(($dataRAMQuotaPercent * $totalRAM / 100000))
+  indexRAM=$(($indexRAMQuotaPercent * $totalRAM / 100000))
 
   echo "Running couchbase-cli cluster-init"
   ./couchbase-cli cluster-init \