I run 42 Lb injectors, 90mm throttle body & MAF. You can certainly run less injector, and less throttle. It depends on the cam, compression ratio, 4V vs 2V heads, ect. ect. I think 24's are O.K.
I run an EPEC with no IAC. starts and idles O.K., I may add a cold run dashpot, or solenoid.