Hi Lee,
I have a Golden State Models kit of the F-94 Starfire. It's very nice and I would guess, as the wood selection was excellent, that it would compare somewhat to Richard's kit.
It is around the Ringmaster/Yak-9 type and will pretty much fly like those.
So, any engine that you might consider for a Ringmaster would be a good choice IMHO.
Brodak 25 sounds great from what I hear about them, or the LA 25. Nothing wrong with the FP 20 if you tone it down with Brett's set up.
Bill <><