amazon ec2 and s3 setup

I am about to migrate a large web project (many sites using common data) to EC2 and i wondered what would be the best setu开发者_如何转开发p (I am very much a newbie with Amazon AWS).

The site pages are rebuilt by scripts once a week and the resultant static pages are served (currently about 7 to 10k views a day). Inbetween the weekly builds I would like to access the db to add/edit data.

I am thinking either EC2 + RDS or EC2 and S3 (S3 having the advantage of keeping a copy of the static pages too). Do these options sound reasonable, based on what I have mentioned?

Thanks in advance

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We're using EC2 (experimtented with a few instance types just to learn cpu extra large worked best for our type of application), and rather than using RDS we extensively use EBS - one EBS for running code, one EBS which holds mysql database files. S3 is used for incremental backups mostly- as the EBS can be mounted on any other instance easily.