In the northeast, to me, a "nice" 914 quickly becomes less so once exposed to road salt, sand, grime of winter. 30+ year old cars with no factory rust proofing. No AC. Leaky tops and, compared to your SC, no hp
The very reasons you don't seem to want to DD your SC will be the same reasons you would tire of your 914.
Smelly heat too never impresses the college ladies either.
You would want 4 snows for winter use to have any chance of getting around.
I DD my 914 in highschool. I was young and foolish. No ac.. sticky vinyl seats; also, only 70-100hp and 2000lbs when all around you are 3-5-7K pound cars/trucks with drivers that dont pay attention.
If you lived in souther cali I 'd say go for it. It will be a harder go of it in the northeast.
Also, given age, more frequent maintenance needs.. timing, points, plugs, valve adjustments etc.. in the 3-5K range for optimal performance, and with only 80hp, you'll want optimal performance. Their simplicity, however, is their reliability. But sourcing parts may not be as quick as a trip to Napa for item "X".
Check the rust usuals..longs, battery boxes, trunks, under weather striping, floorboards.. well, essentially anything metal