Hi, I did something similar to this in the past (a personal project) which allowed users to:
1) Log in or register,
2) Apply a subscription payment or advance payment,
3) Create a simple 1 page site,
4) Change content and host it live......
These projects are really exciting for me. I love working on big PHP projects. My quote covers everything you can imagine and more - a fancy, subtle web 2.0 design, powerful code framework with plenty of security features like MD5-encrypted passwords (so if you get hacked, they don't steal your users passwords and you don't get sued like Sony - 90% of the other freelancers here wouldn't bother with that, as you wouldn't notice the difference! "if it works, it works...")
............
I'd be really happy to work with you on this one and make myself as available to you as possible. I'm an Australian so there'll be no misunderstandings with the project.
...........
Please, send me a message, email or call me via my biz phone or Skype as I would like to contribute to your project on an intellectual level as well. I already have some great ideas for fun features which will ensure you have a strong, vibrant, dedicated customer base.
............
P.S. Excuse the dots... Apparently Freelancer doesn't let you create paragraphs or add line breaks. I've sent this via PM to make it more readable.