Advice on Trailer to be left on property

If you have any slope, level the camper, set the drains to the slope, run a 12" deep trench, install perforated 4" on 3/4" minus cover with porous membrane and refill. Before any jump in to criticize, this could be range and patties aren't buried. Gravel is good for a base. I would go with a 1" minus and top with ground limestone. This will give a pretty firm base and a smooth top. If you don't need A/C you can get by with the genny, A/C will break the bank. Power near the pond will be appreciated in the future even if you locate to a different area. Think, lights, pavilion for picnics aerator for fish during high heat or freezing weather. Once you have a meter base you can drag the power on your own poles wherever you wish. BTDT