With my basic knowledge of AWS networking. As someone else did it for me. Wouldn't you setup a Firewall/router on AWS though their security options. Then apply IP's to your internal network.

This tutorial demonstrates how to host a static website in AWS by using Amazon S3 buckets with Route 53 to provide domain name services.

AWS announces three new EC2 instances powered by AWS-designed chips that improve the performance, cost, and energy efficiency of customer workloads.