Any advice on dealing with GC's for rehabs?

[Patrick Philip]

I have realized I cannot keep up with the workload doing the work myself. I will be hiring GC's from now on. I was hesitant because I know they could charge an arm and a leg for something that's not even difficult. I have some questions:

1. How much down payment is the standard %?

2. How do I know they will work at a quick pace once hired? I would hate for a project to be put on hold because of a lazy contractor.

Any other tips you could give me would be appreciated. Thanks.