build a website that is easy to update and integrates with cloud based backend platforms by Genomicexpressio

I am updating my website www.genomicexpression.com which was build using iWeb. I hear that wordpress is a great and inexpensive content management system. Would like to integrate to mailchimp and capsule (crm)… (Budget: $750-$1500 USD, Jobs: Graphic Design, HTML, MySQL, PHP, Website Design)