We went through the self-contained vs. trailer dilemma a few years ago and ended up buying the used Class A moho, but that choice is farther down the line for Revan. Here's another possibility: 1974 Volkswagen Beetle & Camper - road test - YouTube
I've had several Type 2's over the years: 65, 67, and 71, and while the split window is charming, the 1971 was notable for several design advantages: first dual port engine, and power disc brakes. After 1971 the engine is harder to pull out and my brother's 1970 Westie needed frequent engine pulls when he was crossing the country.
With your limited mechanical knowledge I suggest a product that would be relatively easy to find repair shops for when you are in some small town, or Len n Jeanne's suggestion on page 1. A 16' Bambi will be more comfortable to live in than a converted VW.