Hi there, I've not done the 24/7 motor homing but have had three different styles of MH over the years. Are you thinking of going overseas or just the UK?
I really enjoyed my time holidaying but also spent about 8 months living in one almost full time, it was parked up though for most of the time.
The things I missed were - a bath, my own washing machine and well, not much else really.
I liked my low profile, fixed bed best. 2.8 jtd, fiat ducato. If you can, go for at least a 2.8 as anything less than that will struggle at times.
Sounds like a great idea. I'm a mine of useful and useless information re motor homes so feel free to pick my brains. Loads of useful websites too.