diff --git a/.env.example b/.env.example
index 08348168..a5c2a4de 100644
--- a/.env.example
+++ b/.env.example
@@ -2,14 +2,14 @@
 TF_VAR_AWS_PROFILE=default # do not change this
 TF_VAR_VM_NAME=YOUR_IDENTIFIER # default "polygon-user". It can be any string, used to discriminate between instances
 TF_VAR_DOCKERIZED=no # default "no", otherwise only one VM is created and the Polygon devnet will run in docker containers
-TF_VAR_BOR_DISK_SIZE_GB=20 # size of the disk in GB for Bor client (default is 100GB)
-TF_VAR_ERIGON_DISK_SIZE_GB=20 # size of the disk in GB for Erigon client (default is 100GB)
+TF_VAR_BOR_DISK_SIZE_GB=20 # size of the disk in GB for Bor client (default is 20GB)
+TF_VAR_ERIGON_DISK_SIZE_GB=20 # size of the disk in GB for Erigon client (default is 20GB)
 TF_VAR_BOR_ARCHIVE_DISK_SIZE_GB=100 # size of the disk in GB in Bor archive node (default is 100GB)
 TF_VAR_ERIGON_ARCHIVE_DISK_SIZE_GB=100 # size of the disk in GB in Erigon archive node (default is 100GB)
 TF_VAR_BOR_IOPS=3000 # Amount of provisioned IOPS for Bor client
 TF_VAR_ERIGON_IOPS=3000 # Amount of provisioned IOPS for Erigon client
-TF_VAR_BOR_ARCHIVE_IOPS=15000 # Amount of provisioned IOPS in Bor archive node
-TF_VAR_ERIGON_ARCHIVE_IOPS=15000 # Amount of provisioned IOPS in Erigon archive node
+TF_VAR_BOR_ARCHIVE_IOPS=3000 # Amount of provisioned IOPS in Bor archive node
+TF_VAR_ERIGON_ARCHIVE_IOPS=3000 # Amount of provisioned IOPS in Erigon archive node
 TF_VAR_BOR_VALIDATOR_COUNT=2 # number of Bor validator nodes (default is 2). Note that while spinning up a public network (mainnet/mumbai) node, this will serve as a non-validator
 TF_VAR_BOR_SENTRY_COUNT=1 # number of non-validator Bor sentry nodes (default is 1)
 TF_VAR_BOR_ARCHIVE_COUNT=0 # number of Bor archive nodes (default is 0)
@@ -24,7 +24,7 @@ TF_VAR_BOR_VOLUME_TYPE=gp3 # default gp3
 TF_VAR_ERIGON_VOLUME_TYPE=gp3 # default gp3
 TF_VAR_BOR_ARCHIVE_VOLUME_TYPE=io1 # type of EBS volume for Bor archive nodes (default is io1)
 TF_VAR_ERIGON_ARCHIVE_VOLUME_TYPE=io1 # type of EBS volume for Erigon archive nodes (default is io1)
-TF_VAR_INSTANCE_AMI=ami-017fecd1353bcc96e # ami instance type (default is ami-017fecd1353bcc96e, running ubuntu 22.04)
+TF_VAR_INSTANCE_AMI=ami-01dd271720c1ba44f # ami instance type (default is ami-01dd271720c1ba44f, running ubuntu 22.04)
 TF_VAR_PEM_FILE=aws-key # name of the certificate (.pem file) previously generated (default is aws-key)
 TF_VAR_REGION=eu-west-1 # AWS region to deploy to (default is eu-west-1)
 PEM_FILE_PATH=/absolute/path/to/your/aws-key.pem # absolute path pointing to the certificate previously downloaded
diff --git a/README.md b/README.md
index a1cfd7ee..0d9c5362 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ To use the `express-cli` you have to execute the following steps.
 - use [nvm](https://github.com/nvm-sh/nvm#installing-and-updating) to switch to the proper `node` version, `v16.17.1`,
   by running `nvm use` from the root folder
 - install `express-cli` and `matic-cli` locally with command `npm i`
-- generate a keypair on AWS EC2 and download its certificate locally (`.pem` file)
+- generate a keypair on AWS EC2 (in the same region being used, currently `eu-west-1` by default and download its certificate locally (`.pem` file)
 - copy `secret.tfvars.example` to `secret.tfvar` with command `cp secret.tfvars.example secret.tfvars` and check the commented file for details
 - **If you are a Polygon employee**, connect to the company VPN
 - modify `secret.tfvar` with addresses of the allowed IPs (as specified in `secret.tfvars.example` file)
diff --git a/src/express/common/config-utils.js b/src/express/common/config-utils.js
index d8712e79..4888361f 100644
--- a/src/express/common/config-utils.js
+++ b/src/express/common/config-utils.js
@@ -49,8 +49,8 @@ function validateEnvVars() {
     TF_VAR_AWS_PROFILE: validStr({ choices: ['default'] }),
     TF_VAR_VM_NAME: validStr({ default: 'polygon-user' }),
     TF_VAR_DOCKERIZED: validStr({ choices: ['yes', 'no'] }),
-    TF_VAR_BOR_DISK_SIZE_GB: num({ default: 500 }),
-    TF_VAR_ERIGON_DISK_SIZE_GB: num({ default: 500 }),
+    TF_VAR_BOR_DISK_SIZE_GB: num({ default: 20 }),
+    TF_VAR_ERIGON_DISK_SIZE_GB: num({ default: 20 }),
     TF_VAR_BOR_IOPS: num({ default: 3000 }),
     TF_VAR_ERIGON_IOPS: num({ default: 3000 }),
     TF_VAR_BOR_VALIDATOR_COUNT: num({ default: 2 }),
@@ -63,7 +63,7 @@ function validateEnvVars() {
     TF_VAR_ERIGON_INSTANCE_TYPE: validStr({ default: 't2.xlarge' }),
     TF_VAR_BOR_ARCHIVE_INSTANCE_TYPE: validStr({ default: 't2.xlarge' }),
     TF_VAR_ERIGON_ARCHIVE_INSTANCE_TYPE: validStr({ default: 't2.xlarge' }),
-    TF_VAR_INSTANCE_AMI: validAmiStr({ default: 'ami-017fecd1353bcc96e' }),
+    TF_VAR_INSTANCE_AMI: validAmiStr({ default: 'ami-01dd271720c1ba44f' }),
     TF_VAR_PEM_FILE: validStr({ default: 'aws-key' }),
     TF_VAR_REGION: validStr({
       default: 'eu-west-1',
diff --git a/variables.tf b/variables.tf
index 9fa06a1b..0e170237 100644
--- a/variables.tf
+++ b/variables.tf
@@ -99,7 +99,7 @@ variable "ERIGON_ARCHIVE_INSTANCE_TYPE" {
 }
 
 variable "INSTANCE_AMI" {
-  default = "ami-017fecd1353bcc96e"
+  default = "ami-01dd271720c1ba44f"
 }
 
 variable "PEM_FILE" {