Not sure if there would be a benefit to be honest. Remember that all this beneficial bacteria needs something to munch on.
You can just use 'red sea reef mature pro kit' if you're looking to do a full cycle.
It has a few products, but one of them recommends having a protein skimmer or not to use it (the one that converts nitrates to nitrogen gas)
I personally used biospira, a full bottle for a 55gal tank, about 44 gallons of water. Then I dosed on dr tims ammonia, and followed his fishless cycle guide available online.
Everything ran perfect according to that chart, no issues. I did start w/ dry rock, so I'm sure live rock will have a better effect.
Note!: I highly recommend practicing QT process before tossing those fish in. Since you're still cycling, Get a QT right now, so there will be less of a time gap between when cycle is done and when fish are ready to hop in the DT.
Trust meee, it's worth the extra $50 for a 10gal tank set up. I jumped the gun and put some clowns in my Dt, but one did show signs of ick. Lukcily no loss, but now they're in a QT for 11 weeks while DT runs fallow.
No regrets, I still have the fish & they're healthy, but do it! =) #endrant