Hi and :welcome4: to clubmotorhome, quite an ambitious first trip you have planned. Why not try overnight on the dealers or sellers car park first to get to understand how the heating, water heating, lights, hook up, water system including filling and emptying (winter not far away now and need to know how to drain your tanks water heater and taps). If you have a TV you will need to know how that tunes in as well. Then there is the toilet to understand, cleaning and chemical additives. Hope you can see the benefit of having someone nearby to ask on these matters, of course you could just wing it like most of us do but I wish I had taken my own advice with some of the vans we have owned.
Still nice to hear that you have ambitions to get out there and wear some rubber away rather than let your tyres pass there use by date in your driveway.