Good choice

 

I've not done the aluminum flywheel but have owned various weight flywheels and disk setups including dual disk the much heavier dual mass flywheel. (It's a C4 Corvette) Frankly nothing showed up at all on the dyno as any difference in any of them nor can I feel any real difference in how quickly the car revs.

Same for reduced weight drive shafts. Nothing all showed up on the dyno.