As far as the FAA License goes. You will then get into crew rest for L/M and need to hire more people. With the license you will have people asking for more money as they now have something to lose.
When we carry a LM we normally also carry a mechanic, FAA certificated A&P. For the same reason, no ground staff at the destination. There are no duty time limits for an A&P, they're on the plane for days.