Hi ya Saddle Tank, & Welcome to the Boards.
I think, although we all try, it’s very difficult for anyone to give any accurate advice on condition of a vehicle at the best of times unless we personally know or can see that particular vehicle.
As depending on ‘Your’ personal skills, Body, Chassis or Mechanical issues might NOT be a problem to you. However the Electronics side might be like understanding an Alien language that hasn’t been discovered yet while Blindfolded.
Then by nature of it being a Motorhome you’ve got to take into consideration the condition of all the systems on the Domestic side as well that in some cases could outweigh the cost of a bit of Body work or mechanical repair.
Make sure it’s got a Full MOT.
Consider getting an ‘AA’ report.
Ask for the ‘Habitation’ report.
Then consider getting a ‘Systems Check’ by an Auto electrician that’s part of a Motorhome service garage on the internal systems before purchasing.
I have found that a common issue is not necessarily the Vehicle, It’s the Mindset of People getting a Livaboard vehicle often thinking that - It’s about living’Free’ !.
Understand your Skills & Capabilities.
Make sure you have a Cash Safety net for Emergencies.
Network with capable people & take care of those relationships.
Understand WHY you’re considering this lifestyle.
Make a Plan as to How your going to live, Where your Travels will take you, Spend time researching the routes & Parkups.
You might start by becoming a Full Member on here
Good Luck