well, first of all, the survey that you were shown isn't even worth the paper it was printed on... NEVER take a seller supplied survey seriously!
bank repo is a big red flag...
who came up with the estimate to replace the oil pans? the seller's broker?
blisters are always cosmetic on a hatteras, not so on a taiwan hull... some were good, some were not so good... that's the problem with older taiwan boats, quality is all over the place.
another common concern with taiwan boats are the fuel tanks, which often needs replacing after 15, 20, 25 years depending on how they were installed. basically you won't know until you start find diesel in the bilge and then it's time for some MAJOR surgery.
if it's a good deal, inspect it carefully, do a sea trial and then decide if it's worth surveying.
personally, i dont' like the layout, it's like the old Hatt TC, Bertram, some Chris. I prefer one big saloon and aft deck on one level than this split level saloon.