Hi there! Exciting project that I'd love to hear more about!
Being honest, I have bid as low as possible as I can't prove that I can do this project for you... not the best opener, right? But at least you're still with me.
I am an IT man by trade, but I have worked on Wordpress sites for about ten years, and have built about half a dozen of them, and nothing has been more than a company website with a variety of pages and posts. I have done some simple design for a variety of clients, and they seem to have loved it, though unfortunately most of the work that I have done has been in contract with my day job so I can't show you much.
I can however, say that I am a problem solver, and I have actually been looking at a similar personal project recently, so have already been solving some of the problems like private access, payment, exclusive membership content, etc.
So, here's my proposal... I promise to work my butt off to help deliver your project, and get you the end result that you're after. If I can't do it, you don't pay more than any costs incurred for themes & plug-ins. It may put you behind time-wise, but if I can't deliver what you're after, then I don't want you to be out of pocket.
I'd love to hear more specifically about the project, and would be happy to sign an NDA if need be of course. Feel free to drop me a line on here, and if things look good, we can maybe get together for a coffee and talk it over.
I look forward to any feedback you might have. Thanks!