Nicky, you could always call the guys at Lassen CC in Susanville to see what they say. I'm in the GS program now and like what I'm learning. There are some in the class that once finished they could go out and start their own business immediately but that's not the norm. Most (me included) would need to work for a mentor.
Also, keep in mind that every GS program has its challenges and differences. Lassen's program is on the expensive side with the guns, tooling, and materials coming out of your pocket. Anything you screw up costs you $$$$, which is how it would be in your shop anyway.
Lassen's program focuses on the diagnosis and correction of a problem. I have researched some other programs and found they focus heavily on custom gun building. Two schools of thought. You do get taught how to custom build a rifle, but as a full service GS I think you'd be seeing more of the smaller projects cross your door.