I could be wrong, but i think that the doors are there but they have been glassed in place as in the side-on pic I can recognise the inner-door mouldings and I know where they end.
If you want to leave them like that then fine, although it's just a matter of a few mins with an angle grinder to cut them out and then filling/sanding/filling/sanding/filling/sanding/.... to make them useable again. Not a biggie.
As far as the wheel centring is concerned remember the wise words of the great GaryJ "no one looks at both sides at the same time"
TBH for that price if I had a double garage and didn't have this rusty hunk of VW Camper to get on the road for the summer
I would be sorely tempted as the donor is good and what is included in the kit of parts he's offering is good.
Probably a good thing I don't have space for it!