buying LHD vehicle

Hi all who know most about everything European.
My wife absolutely refuses to fly and I am not going by train or bus.
I want to drive from Bonnie Scotland to much
warmer-southern-anywhere-probably- Spain in January coming back April.
Will it be better value for money buying a vehicle in France or Holland to
drive down.
I intend to use it to drive around Europe over the next 2 or 3 years.
I was thinking of a big tank like the Toyota Landcruiser Amazon although I m
a bit concerned about the meadieval Spanish towns.
Done it before in my RHD BMW Series5 and Audi 80- pretty hairy in the
mountains.
When I was 35 years younger I drove 2000 miles around Spain in a
mini--seemed quite comfy--at the time.
Looking forward to your advice.
Tam