RE: MPPT/DC to DC Charger for Trailer Build
"I have a lot of 12V equipment, especially strip lighting that takes up more amps than shore power or the generator can provide."
You are using more than 90 amps for lighting? What are you lighting?
RE: Solar power
The introduction of Lithium RV batteries made battery powered AC possible for short periods if you have the space for mounting them. However, recharging those batteries from solar just isn’t practical unless most of your roof is covered with panels and you are in good direct light. Since OP is in Ontario, not likely. With ten 100 watt panels putting out 50 amps…that’s six hours to recharge 300 or so AHs, and you’ll just not get that.
RE: Solar power
With wet batteries the starting point is one solar watt per battery amp hour. With Lithium and probable increased draw I believe 1.5 solar watts per battery amp hour is where you start. No penalty for extra solar panels.