That's a good enough base for lots of web-based projects; it seems to me like your general "how do I..." question may not have been about how to build your idea with web software, but something else. How to attract early users/contributors, maybe? Or collaborators? Or other attention/support? (Or maybe you are wondering about the mechanics of setting everything like the domain/hosting/server up, in which case you may want to ask more specific questions in other targeted forums.)

I'd say build as much of what you've got in mind as you can. Encourage people to look at it even when it's very rough -- don't disappear for months making something slick/complete. Adjust. Continue.

You may also want to put contact details or a personal web page in your profile here.