You already have experience on living space in an RV, so I will not comment on what I think of living space for that long, other than to say we have done month long trips in our 28 ft class A, and by the end of a month I am glad to get home and have more elbow room, but could have survived longer in the space. I will however comment on traveling in such a size RV without pulling a TOAD car around, which we did for our first 20,000 miles of traveling, before we realized we were spending too much time in camp grounds, and not enough out seeing things. While out sight seeing in our coach I often found myself wishing it was just a bit smaller when looking for parking spaces, etc. In the US a standard full size parking space is 22 feet long, our 28 ft coach has a 178 inch wheel base, meaning if we can back into a full size parking space and overhang the curb we can fit close enough, only sticking out a little bit (sticking out no more than a large pickup truck might when parked nose in). Having said that all bets are off if attempting to find parking in larger cities, or in the older eastern part of the US where many of the towns and cities were built before the invention of the automobile.
As to your goals, it sounds like you want a turn key option with a motorhome that is ready to load up and travel when you get here, if that is the case I would suggest looking at a used Cruise America Class C, just be aware they lack most amenities, as they were specifically built for the rental market, therefore no awnings, leveling jacks, TV, slide outs, etc. or other things for renters to break. The advantage here is that Cruise America almost always has used coaches for sale across the US, they are typically about 4-5 years old, and have around 120,000 miles on the chassis when they sell them, they even have a fly and buy rebate program if you have to travel to pick up the coach. They also put them through a refurbishment process, remove all the gaudy cruise America vinyl wrap signage, replace the interior fabric seating covers, curtains, etc. and do a general chassis service. Here is a link to their current for sale offerings
https://www.cruiseamerica.com/buy-used-rvs/rv-sales-inventory-usa it looks like their C23 coaches are starting around $37,000 at the moment, and the 28 and 30 ft models running about $2,000-$3,000 more. Another advantage of a used Cruise America coach is they come with a 3 month / 3,000 mile powertrain warranty, and they sell extended service plans, something that is hard to get on older circa 15+ year old coaches that you will find in the same general price / mileage range.
PPL in Texas is another option, though this is more buyer be ware, I have walked the lot at PPL a few times, most recently in January and my impression is most of the coaches there are ones that people just want gone, many appear to have sat in storage for some time before being put up for sale, and absolutely no repair / refurbishment work is done on them until after the sale. The thing I always say about PPL is that it is a great place for me to go to recalibrate my expectation of what is "good/great" condition in the RV world, and not in a good way.
p.s. it appears that for even less money Cruise America is selling pre-refurbished off rental coaches now, I guess like many places they are having a help wanted problem and have more coaches to sell than they have workers to put them through the reburbishment process.
Pre-Refurbished Specials prices on these appear to start around $32,000
