Good contractor but a little sketchy

[Brad Sparks]

I've had a licensed contractor doing handyman jobs on a property. I want to use him for a full gut reno but I have some concerns:

-he doesn't have a bank account and can't get one

-if I pay him by check, he can't cash it

-he writes contracts on a lined notebook (he has nothing with his company info on it)

He professional and do good work but he's not business savvy. How have you handled this situation (besides getting another contractor)?