If I was in your shoes, I'd get them, but not everyone will agree with me, because they're tubular.
I'd offer $100 on the wheelset because they're tubular and the market is teeeny-tiny for those.
Then spend $25 on Tufo tape. Then get the best tubulars you can afford. I like Tufo's, but not everyone does.
You may end up with close to $200 involved. Balance that cost against the clincher wheelsets available.
They're out there, and clinchers may make better sense in the long run.
I'm running some on a modern Kestrel with modern 10-sp wheels, just fine.
They will look like clinchers, roll very nicely, and be a little bit hard, but nowhere near as hard as the Ironman's original 700x19 Technova's.
You shouldn't change the Frisbee.
1985 Raleigh Racing USA - Coleman's Competition
1984/85 Klein Performance
1988 Centurion Dave Scott Ironman Master
1989 Centurion Dave Scott Ironman Expert
1989 Centurion Carbon R