Clone of www.24hourfitness.com

I would like to have a basic website built that has the same sort of cuntionality as http://www.24hourfitness.com. I need to have the membership facility built in and the ability to add content from a CMS backend to be displayed on the main site. Those are the only two requirements. I have a budget of $100 (I might be able to stretch a little more if you are able to show designs that you have allready done and meet a tigher deadline)