It might be valuable to enumerate for which exact reasons you need this "biz guy" and really ask yourself if you can't do most of it yourself, at least at the beginning. I'm a designer/developer and I sold ads and did a lot of business development for my startup for over a year before we were acquired. It's amazing how much stuff a smart person can get done (that's out of their comfort zone) when they really, really have to.
Me too. I can't find someone with idea, no matter how stupid, no matter how hard I try. Going to 'networking events' usually yields dozens of business cards of people who want to sell 'services' to 'local businesses' (design, legal, accounting, market research, whatever...) but they all just want to get paid by the hour - let along that one of them could come up with an idea.
So that causes the situation where you have 30 or 50 people all trying to sell each other the same services, with nobody who can actually create anything new.