I don’t think those will work. You (@chinzw) seem to know a lot more than me, so maybe you can help clarify a bit.
Besides the difference in pins 3 vs 7 (only need to to keep the gate separate from source - 3 vs 7 shouldn’t matter), the 60v ones also have a huge difference in both amps and total watts. (120A vs 7530 338A, and 230W vs 375W). Especially as this is pretty over-rated and you won’t actually be able to push 338A through 7530…
Given that the 7530’s still fail infrequently, lowering the spec seems like you’d increase the failure rate?
Where i really get lost is the importance of things like switching speed, gate resistance, avalanche energy, etc… greek to me.
Personally - as the 7530 seems to work better than most (at least compared to other anti-spark switches i hear about failing frequently), i would think trying to find a more robust fet would make more sense vs the ones linked. I was looking at a new OptiMOS transistor IPT015n10n5 100v w/ almost all improved specs, but the feet would need some redesign to easily fit.