Welcome from Old Portsmouth.
Before I really took up hiking and camping my wife and I lolled around in a towing caravan, then moved onto a 6 berth motor caravan, (2 beds above the cab) then downsized to a Ford Transit sized one. This was OK, raising roof and I side door was the most important and we could use it as our care.
When we moved to our present estate, such vehicles, caravans, boats, vans etc are not allowed so we thought 'been there, done that' so it was a good time to give it all up. Would I go back to it? Maybe a small towing caravan which I could just park and leave for a season in one place, but not a motor caravan. We really got to hate that every time we wanted to get anywhere we had to take all our rubbish with us, every time. No, thinking about it we would never go back to that way of life. In any case as we became older we changed, wife prefers comfort whilst I prefer to rough it. Its a sign of a happy marriage so she tells me.
Good luck with you VW quest, I'm sure they are the best to buy. Our friends did the opposite to us, they waited until they retired and then bought a 5th wheeler caravan, now its parked permanently in Spain. Dreadful thing, like towing a tank which is why now its parked permanently in Spain.
Enjoy your walking.