To the OP....Just find a nice Sprinter mounted C or B+ and go for it. I spent many years before I retired, towing a 40 foot fifth wheel all around the West chasing my job. My wife and I lived in it full time. After retirement we wanted to travel about for us, at the pace we wanted. We made one extended trip with the big FW and right away we knew there was a change in our future. While we were very good at setting up and getting road ready, it was just a lot of work to move every day or two or three. We bought a small C,(before Sprinters) and never looked back. It was like being set free. We also learned that we had far, far too much stuff with us. I had tools and parts and supplies to almost rebuild the damned 5th wheel. Not necessary. There's a Home Depot on every corner and a Walmart next door. With your cellphone Amazon will put a part at your site in two days.
The first C you buy won't be your last so don't over-think it. After you travel in one for a while you will get to know what fits your style and will likely trade that first one off and get "the" one. Post a picture of your new ride when you get it.
