[skyking]

I'll mount the compressor unit on engine shock mounts, and use a flex line from the compressor over to the trailer frame. The copper lines from there will be fine, as that is what all the gas piping is on trailers. This will also reduce transmitted noise from the compressor.
The cool thing about the mini splits is the inverter tech on the motor. It does not have that huge locked rotor amperage of a conventional unit. This means a 2000 watt generator will start it fine, and it will be fine on a common extension cord.
It is a 12,000 BTU unit and will work well on the smaller trailer I am designing. It will have plenty of passive heating and cooling features to help out.