If I were you, I'd keep studying. Keep studying, get the degrees you want/need and then open up your gym. Credentials (to the masses) are worth alot more than actual training knowledge. A few masters or a doctorate would get you more business than you telling them "Its ok, I read T-Nation." despite T-Nation having an infinite amount more of useful information.
Anyway, thats what I would do. That, and definitly take the rugby team strength and conditioning coach. Right now, take any business you can, it sounds like youre in the stage of the game where you're going to need money for the long run.