That was the first question he raised when I first proposed about him becoming a partner - "What would I be able to bring to the company?", its because of such questions that I value his opinion.

Thats true, I would not be able to afford to spoon feed him about what he can, he should or how he can do different things. I would have to spend more or less full time on development, finances and customers. He would have to be a self starter and go about trusting his own instincts, if he joins this company. But currently it looks like I have more trust on his instincts than he has on them (at leaast with respect to this venture)