Build 23-page Website, PHP or Ruby on Rails, MySQL DB

Website to be built from scratch, either in PHP on MySQL or Ruby on Rails on MySQL. You decide which technology would be best-suited to the job. Website function is to gather quote requests from End Users, then gather quotes from Businesses to be distributed to the End Users for consideration. Website has 23 pages total. Virtually ever page either reads or writes against the database, so developer should be very skilled in writing efficient queries. Other considerations: 1. Form validation and field handling is to be done browser-side, so developer should have excellent Javascript skills. 2. Page elements should be positioned using CSS (not HTML tables). All other formatting will be done in-house. Provider does not need to worry about colors, fonts, graphics, etc. 3. One page processes credit cards using Authorize.net. Provider should be familiar with [login to view URL] API. 4. Host has not been selected. We will need your help in determining requirements for the host. We have a 35-page spec. with a siteflow, and page elements and their behaviors for every page of the site. The spec. should provide 99% of the guidance a developer will need. Please provide the following: 1. hourly rate 2. whether you would code in PHP or RoR Selected candidates will be sent the full spec. and asked to provide an estimate (#hours) for the whole job.