Gary Bailey is spot on with his advice.
I would stress moving on to the next guy. I suggest putting a CL ad up, you'll get tons of responses from GCs looking for work. Spend a solid 1-2 weeks meeting people at the property, walking them through it, and explaining exactly what you want done, and asking them questions.
You want to look for a valid license (verify it on PA's govt website) and workman's comp (around 1-2 mill in coverage).
Don't ever do T&M, there's no incentive for them to get the work done ASAP. Also profit sharing? That is a joke and a half.
I personally look for general contractors, or guys that will do all the MEP/carpentry/finishing/etc. That way, when your contract holds them to a time limit to complete all work, say 8 weeks or something, then its all on that guy's shoulders. Sure you could save a bit of money if you split up the disciplines, but I promise you if the rehab goes over your time estimate each discipline will be blaming the other for why the project was delayed. Does this make sense?
It sounds great that you're pursuing this, but I think you're going to make some very co$tly mistakes unless you find a mentor who has experience doing this.
One tip I'll give you is that GCs are there to maximize their own profit. To give you an idea, I'll typically interview about 30-40 GCs for our rehabs, from which about 10 will submit estimates for the work. On the last house I did this for, our estimated budget was about $80,000. Estimates I received ranged from $52,500 to $415,000.
Do you think the GCs that submitted the $285,000, $340,000, and $415,000 bids were stupid? No, they knew every now and then they'd run into a novice who who had no idea what he was doing, and would have no problem taking all the profits from the flip, plus money out of that investors own pocket.
They're call CONtractors for a reason.