[Mr.ac]

Hum...
My guess you are way overthinking this oil temp thingy.
If you do want piece of mind an oil cooler would do the trick. Or just put some vents in the hood.

But if it was me, I'll burn the car. No point in trying to sell it. Once the oil heats to those levels it's only a matter of time before the engine blows up.

But hope is not lost. You can pick a nice Civic Si new or used with out worry about silly high oil temp. Trust me these new turbos smoke any 86 out there, even with a forced induction kit.