How can I manage my general contractor while I am having a full time job for flip?

[Nate Mao]

I was lucky enough to find a GC which can do almost everything, the company is having 20 employees and with workman comp and liability and license.

My question is how can I manage the project with this contractor while I am a full time employee? I was advised that the payment terms can help, such as if they finish one item and then I pay that item, I need a new roof, new furnace, new kitchen , new bath, refinish floor, painting, and new windows, and I need to have a strong contract for every aspect.