Thanks for the advice, I'm thinking the Iota 55A w/IQ might be the best choice. The voltage outputs on the charger seem to match up well with Trojan's recommendations. I'll probably be plugged in most of the time, but plan on visiting the National forest campgrounds in Northern Wisconsin and the UP this summer.
Does anyone know what systems gobble up the DC Amps the most? I'm thinking the furnace, and water pump must be the biggest draws. Does it make any sense to replace the 12V lighting with LED? I'm going to get a small 150-300W inverter for the TV at night.
If I got this all right, my Two T105's should give me 220AH of stored power, and I can safely use 110AH before recharging.