If you decide you do want a simpler campervan style unit check out Van Specialties in Tualatin, Oregon or VanWorks in Fort Collins, Colorado. Both those upfitters have a lot of experience with conversions that are functional but rather simple and easy to maintain. Costs for a basic conversion generally range from $15k-25k, depending on level of amenities.But as much as I appreciate and embrace the D-I-Y concept, my biggest challenge and obstacle is probably that of finding the free time to devote to much problem solving and maintenance work. ... I’m afraid I simply wouldn’t be able to keep up with much added responsibility for something like complex RV maintenance/repair. And that is really what’s behind my focus on the K.I.S.S approach to RV travels.
Should you go that route you'll still have the benefit of a new vehicle and basic but rugged features. They're not the kind of RV you'll see at shows and dealers but they have a big following among the outdoor climbing, kayaking and mountain biking communities.