RE: Support equipment/cart set up help
Question to yourself: Am I going to the field to FLY, or to build and repair?
If to fly, all you need in addition to your airplane and transmitter, is fuel, starter & battery, spare plug, a couple of props and a screwdriver and prop/plug wrench. THAT is ALL!
All the building and repairing should be done at the shop which is generally more comfortable, better lit and you have everything that you need handy.
If you are going to the field to build and repair, it seems a waste of time to me, but that is something you have to decide for yourself. Maybe you need a motor home converted into your shop?? Anyway, enjoy!