I do agre 116 feet is a tad long are you sure you meant to type that (You would need permits to move it).
Now, to answer your questions:
Two ways you can wire a trailer 120 volt only for RV's is a 30 amp box. You can get one at any RV dealer. this is a SUB PANEL with a main breaker (most sub panels do not use main breakers but.. Thaqt said they are optional even on standard sub panels
White wire to the white bus. Green/Bare to the Green/Bare bus.. NOTE The two bus bars are NOT connected as they are in a MAIN box. that is the major difference between a SUB/RV panel and a MAIN panel.. White to the MAIN (master) Circuit breaker. Limited number of branch breakers on a 30 amp box.
Or you can wire it for 50 amp 240 volt and on a trailer that big.. RECOMMENDED>
Different sub panel. you have either 2 blacks or a black and red. .White same as above, Green likewise, black or black and red one to EACH of the TWO main breakers..
Otherwise you are wiring a house. same as a house, Just the breaker box is different.
NOW: In addition. MOST RV's (is this a "Parked" trailer or is it intended to be Mobile, RV's are Mobile)
Most RV's also have a 12 volt system. This powers lights, water pump, furnace, control power to Fridge, Water heater, Air conditioners and most other stuff with the exception of the microwave and televisions and of course your 120 volt wall outlets.
Finally, any outlet in a place that can get wet
Bathroom,, Kitchen counter,, Over the dining table,, Patio (outside) MUST be GFCI protected.. Usually that is one GFCI, usually in the master bath or half bath (but not always) and the rest of them "Chain" off that GFCI.. Mine was in the half bath, (Still is) but I just added a 2nd (End of kitchen counter) on a brand new circuit along with a chained outlet (right beside it) for better power in kitchen, it is labeled KITCH-2 (Kitchen circuit 2)
Oh and the wire.. Most RV's for most outlets use 14 ga wires and "Quick box" I do not recommend those at all. oh 14 ga is ok for 15 amps. but the quick box is junk
The one I added is 12ga bent around screws on the GFCI not punched down (Quick box) or poked in a hole (Most 15 amp outlets offer that option, including my GFCI) 12 ga.. Well ( though tit was a 15/20 GFCI (it's not) but I like it better, less voltage drop.. Bent around a screw means it can carry the FULL load, 15 amp breaker on one end, outlets on the other, standard Dual wall box.
WORKS GREAT once I pushed the RESET on the GFCI.