If you have the room/weight and are going to be doing a lot of dry camping, have you considered putting in 6 volt batteries, possibly even 4. Most people who do a lot of dry camping do that and you could buy a small inverter for the television.
Being in VT, I hear you about the cell service!
2016 Chevy Silverado 2500HD Duramax LTZ Z71 Extended Cab, Long bed
2012 Dodge Ram 1500 5.7L Hemi (with K&N Air Intake) (traded)
2012 Rockwood 2109S (Sold)
2014 Cougar X-Lite 21RBS