Welcome..
Remember it gets cold in France and North Spain so you may not be hanging about to much. North of Madrid can have snow..

The more things 12v the better as they then run direct off battery, however small items run off an inverter (12v to 240v mains) wont really hurt that much...Depends how much battery power you have..
Solar panels can be done DIY and really cheap, 80w kit on ebay about £120 ish.. Fit and forget really.
Gennie... The pet hate of many motorhomers but for some they are essential if using medical equipment or staying in the van long term over winter and not in a sunny climate..

Thank you Tonka! Thats a great help i'm probably going to stay on a site in the Algarve for dec& jan so it's the journey down which i can't my my mind up over, :blink: