Ohoy speedy, lemme give you a few tips!
First off, none really believes the 'I can propose profit share', and it generally doesn't look very good. So a better idea might be to present the actual project, and see if someone would be interested in joining it.
If the idea is good enough, then people will probably join in anyway
Also, you haven't really said what your part in the whole thing is. This all basically makes it look like this:
Some boss, with no experience, having the best idea ever for a game, which then gathers a bunch of skilled professionals, who work for free ofc. They make the most awesome game ever, and a big company comes forward after seeing their blog, saying 'here, have all our money!' and then it's equally split between the people who worked on it.
I believe I've seen something like it before. Mind you, something like it, not exactly the same. So it's a great and original idea.
I still believe however, that a better way of going about it, might be to introduce the project itself, and then seeing if someone is interested in working on it, for the fun of it, rather than the money.
Posting it in the correct part of the forum is probably a good idea too. I believe this part is meant for an already existing project between the polycounters themselves. Although looking at the posts in this part of the forum, I could be wrong. So take that last one with a grain of salt.