Small C or longer B+?

I recommend a 26-27 foot Class C with an extra house battery for 5-day dry camping. Most rigs are OK for three days with judicious use of power. The furnace blowers use a lot of power. Most RV's are not well insulated from ambient cold and heat although there are way to make things better. You'd be surprised how nimble a 27 footer can be, in tight conditions, just needs a little skill and patience. Driving a stock Class C across rough fields may not be good for the vehicle and contents. Slides are nice but can have electro-mechanical problems. Solar arrays and extra batteries are popular setups for extended stays off grid. Our 2004 Tioga 26 Q has a very large cargo bay in the rear with interior lights and access on three sides. The rear bedroom is a must but it only has access on the right and foot of RV queen bed. We use a large dual sleeping bag and don't need to make the bed. No RV is perfect for all buyers and their usage.