Thanks everyone!
TO provide an update, we have taken the plunge and installed the following upgrades (for now):
- replaced 12V house battery with 2x Trojan T105
- 1x GoPower "overlander" solar panel 160W (we have room for one more if needed)
- 1700W GoPower inverter (the 1000W was out of stock)
- battery disconnect
- surge gard protector for when we hookup to shore power
- replaced Smittybilt tow bar with Blue Ox Alpha tow bar (to tow the Jeep)
We intend to keep an eye on the battery level by using our radios hack meter, but would like something hardwired.. not sure which one to get.
Anyway, many thanks for the great advice!