Best van life vehicle?
So I'm still in the looking/ saving stage. I was wondering if y'all could help me decide on the best vehicle. I'm looking for something easy to maintain/ repair (as close to idiot proof as possible), reliable, isn't a known lemon ( we've gotten a few vehicles in the past that we didn't research properly), affordable to someone low income, and with enough space for a person under 5'6" to stand up in. Prefer good gas milage, of course, but am willing to sacrifice that for ease of repair. Oh, and it would help if it could still be used for cargo on occasion, but I figure that's going to be more an interior build thing. Been looking into vans, small RVs, ambulances, and box trucks, but I'm indecisive as hell, and need some outside opinions. Thanks for any help you can give!