Songman,
Trouble is not the first word that came to mind when I read this. I seem to recall, it was "why?"
You are starting a new business. Quite frankly, you only have one customer so far, and he's not going to pay you. Then take into consideration hiring two people and all that goes with that. Then there are FAR's and all the local regulatory issues you will face.
Well, now that I think about it, trouble may be the right word.
Try to create a sound business plan first. You can factor the variables into that.
Good luck, which ever direction you decide.
11Fan