----input from a newb in the market---
IMO:
-Aftermarket a/c is a liability, not a plus. I'd be junking/ebaying the entire thing the first day i owned it. Especially since it's a targa.
-Throttle linkage sounds very simple (ie no big deal)??? That being said are you confident MFI checked out good?
-Get a price for a full rebuild on the trans from a reputable, experienced shop and deduct it from the asking price of 16.5.
-Price out the bushings, etc for the suspension and try to get it deducted from the 16.5 but be prepared to not get it.
Looks like a really sweet car though; neat color! My approach thus far has been to add the work a car needs to be 'right' to the purchase price and then compare that total to the rest of the market. Seems simple but I've found that several cars with a lot of initial appeal get crossed off the list when I take 'emotion' out of the process.
Erik