i will be nice the way i say this,but you are crazy if you cut this guy loose on your project without a set price.he will break it off in you at 1,000.00 per day.that's not a bad deal if he does it in the amount of days the two of you agree on,but guess what 1,000.00 a day cost when he tells you it will take a 3-4 days longer because of this and that.good luck.