Yep, that sounds like the best path as it appears MSHA doesn't screw around and any fines are not small.Honestly, EK, I think you should contact MSHA before committing to a plant to find what hurdles you'll encounter. They have the power to break you right out of the gate. The local contractor I earlier referred to with the all in one jaw/rolls unit was on his own property with maybe one employee.
You should give the guys at Portafill USA a call. They have a impact crusher with onboard screen that would produce somewhere in the region of 70-90TPH of product. Plant only weighs in at 24ton/ 52,000lbs and is undersize load so is mobile enough to take from job site to job site.
A portable, track mounted machine , I don't think you'll come in under 80K.