The primer should help yes, however even if primed a certain amount of care is still required to maintain any machine.
I would recommend getting a local A&P to do an inspection, a small cost which could save you either by not buying it or discovering the clean up won?t be that bad and you get a kit at the price you want.
Hope this helps
Emp complete (minus fiberglass)
First RV-10 build in Hong Kong
Donation made 2020