I just sold the pain in the neck LCI tongue jack that came with our Freedom Express and plan to replace it with an UltraFab 3502 so I can rotate the head 180 degrees and thereby allow the especially tall tailgate on my Avalanche to clear the tongue jack head. I've owned one of these tongue jacks before and it's a solution that's worked well for me in the past. :B
Last summer I installed a 1000 watt PSW inverter in the trailer's front pass through storage compartment so I can power a few appliances in cases where we lose shore power. As soon as the weather warms I'll wire the output to dedicated duplex receptacles inside the camper and replace my existing 8 yr old G27 Interstate battery with a pair of G31s which will more than double my AH capacity and allow the inverter to better cope with heavy loads without excessive voltage drop. :B