I thought it might be good to offer just a little more info about your original Q
Even if by accident you ended up with inj's & maf caled to their same size, you did good
YES, you could just use those 30's and the ProM maf caled for 30's. You can do this because of a cheat method the maf companies have devised.
I've posted lots of info about this before so I won't go into it all again.The main thing to remember is with 24's, the cheat method may or may not work reasonable well. 30's have less of a chance of working well with the cheat method because the larger the inj size, the more ineffective the cheat method becomes.
Since you got all options available to you, you don't need to cheat or lie to the pcm anyway.
Just use your Tweecer to tell the the pcm the truth about inj size and air flow of your combo.
btw, if you wanna know more about that cheat method and why a good deal of peeps are confused about inj's, mafs, why some are caled, why some are not, etc, there is a small article on my site that can help.
Grady