Directory Site Needed Similar to Manta or MerchantCircle

I need a similar site built like Manta or MerchantCircle that is tailored to the niche of Expert Witnesses. We will offer free basic listings to everyone in this market and offer 3 advertising levels for banners and a premium level for enhance visibility (top rankings) Site must include a backend for managing the site and should be built with open source scripts or you should include rights in your price. No coupons are needed since this will be a professional site more like experts dot com. You must build in the categories and subcategories like experts dot com. Images should be proportional, not distorted. ADDITIONAL PROVISIONS 1. Our project descriptions are detailed to make your job easier to perform quickly once awarded. 2. We will provide all graphics such as logo and background. 3. You will need to insert scripts for PayPal (reoccurring) and Google Checkout 6. Provider to make any bug fixes for 30 days after completion. 7. Payment Schedule: 60% at completion, 20% after 45 days live, 20% after 90 day live. 8. Maximum acceptable price is $310.00 US. 9. Development must be completed in 10 Calendar days. 10. We reserve the right to award the project before the bid time is finished. 11. Preference will be given to fast, experienced developers with good ratings w/extensive mysql and php. Do not bid if you have no prior rating on Freelancer.com. 12. Bid with confidence. See our 5-Star Rating.