php expert needed for design and code modifications

Project Description:
We have an existing client site that we want to make changes to. The site is www.girlnextdoor.co.za . we need to make some functional changes to how content is displayed and how voting logic works:

Logic Changes:

Users should have a list of the top 100 girls - 30 per page and they can view the profile of each girl and then vote for them after logging in.

Authentication changes:

Both voters and contestants will have a simplified login/registration process requiring them to have a facebook account. The user can still choose which photo to submit and must be able to choose their own username. no facebook details will be displayed on their profile. it is used for authentication only.

The chat feature needs to be disabled for now. this means that users cannot message contestants

Display

The way each girl's photos are displayed needs work. the system re-scales the photos to a horiible size. the rescaling should be automatic and much more clearer

To use as a guide:

Ideally i would like the site to look and work as much as possible as this one: http://stars-beauty.ru . it is in russian so you need to use a translator

All parts of the site need to be managed through back-end control panel similar to the one we have developed (PM for showing you how admin section works which needs to be customized)

Banner management system needs to be upgraded to something that makes managing banners easier

PLEASE ONLY BID ON THIS IF YOU HAVE DONE SIMILAR WORK TO THIS AND HAVE A GOOD GRASP OF THE ENGLISH LANGUAGE. ASK AS MANY QUESTIONS AS YOU LIKE AS THIS IS NOT THE FINAL VERSION OF WHAT NEEDS TO BE DONE. THERE WILL BE THINGS THAT WERE NOT THOUGHT OF THAT WILL COME UP AND YOU HAVE TO ALLOW FOR THIS. THIS IS NOT A BIG BUDGET SITE SO RIDICULOUS BIDS WILL SIMPLY BE IGNORED.