I have one 85 Corvette, which is more than enough for me. I drove mine home from the dealer in June of 1985. So I don't have the 'disease' you do with Corvettes. My infatuation with orphan-cars is with GMC Syclones and Typhoons.
I currently own 3 Syclones, and 1 Typhoon. I've owned two others, and of the 6, every one of them was towed home in various states of deterioration, damage, completeness, degree of problems, etc. I've been messing with SyTy for 17 years. I know their values, parts value, and costs associated with their resurrection, or profit potential in a part-out, or value as parts for other resurrections. You will get better with assesing your 85 purchases like I've done with
SyTy's.
My current strategy with SyTy is a potential deal has to have greater value than the last deal I completed. My latest acquisition was a 70,000 mile Syclone with 100% original paint, cladding and interior in #10 condition. The chassis and drive train is un-dorked with original. Nothing has been worked on. It wasn't running, the seller had lost interest, and hadn't done his homework to ascertain value. After an inspection, I offered his asking price, we made the deal, and I loaded it on the trailer. He had installed the incorrect fuel pump. I had it running an hour after it was off the trailer. It needed almost nothing furthur. Not even a wash. I'm in this truck about a third of what it will sell for. It will be hard to top this deal with one of better value. At least that's what I tell myself to discourage me from pursuing any further SyTy purchases. #2967 is going to be impossible to top for value.
They're easy to find and buy as long as you have the room to put them, and the resources to make the purchases. Having been buying project cars that are more often towed home than driven for over 45 years now, I suggest you come up with a strategy that includes a desired goal or outcome for your acquisitions or you'll end up with a yard full of derelicts, and wonder what you're going to do now. BTDT.
Enjoy the madness.