Thinking on the 4wd/non 4wd issue, i had a subaru legacy a while back which someone bought from me to tow a caravan with. Was obviously 4wd but had normal 'car' tyre prices and tax bands. Only thing was it would only get mid 30's to early 40's in mpg. Would also be a possibility when u start looking again. Mine only cost me £1400
Best wishes to the family and hope all is better soon
Russ