An organization is planning to host a Wordpress blog as well as joomla CMS on a single instance launched with VPC. The organization wants to create separate dom...

An organization is planning to host a Wordpress blog as well as joomla CMS on a single instance launched with VPC. The organization wants to create separate domains for each application using Route 53. The organization may have about ten instances each with these two applications. While launching each instance, the organization configured two separate network interfaces (primary + secondary ENI) with their own Elastic IPs to the instance. The suggestion was to use a public IP from AWS instead of an Elastic IP as the number of elastic IPs al__cpLocation per region is restricted in the account.
What action will you recommend to the organization?