318 Build Combo Critique

Just keep in mind that any lighter rotating mass will help the car go faster; if you are road racing or rallying or autocrossing, then it typically gets considered more than for drag racing. Of course, lighter flywheels is the best spot to look for reduced rotating weight.
Agreed but we aren't talking lightweight 2 ring pistons, aluminum rods and billet knife edge cranks or even race cars here. My point is that the op should concentrate more on the combination and less on the factory pieces to make it a few grams lighter.