Facebook Game - Tower Defense

I'd like to create a facebook app/game in the 'tower defense' style. This won't be a small project, but the style of game means there is practically zero AI involved, which should keep things relatively simple. Here are a rough guide to some features to give you an idea of the task at hand: - start off with a typical tower defense model - nice graphics/GUI, nothing basic (i can provide the terrain/units/tower graphics) - add random map generator - a weekly tournament to challenge friends high-scores with (like Bejewelled Blitz and Zuma Blitz) - the base will have a special ability the user can select before the game starts - users can buy tower upgrades and new abilities using fb coins There is a bit more to it, i will explain in detail with anyone interested in working with me on this. HERE IS THE IMPORTANT BIT: I am looking for someone who will ENJOY working on this, who is interested in the idea, and be a CO-OWNER of the finished product. Please ask for more details. My budget is up to £1500 - while i am willing to pay that much to someone who has some good experience with facebook apps and would be able to help me to make it a success after it is finished, i am hoping it will not cost that much.