If this is your first time, I think you are doing really well!
I would bet that the addition of this LR
alone will be enough to get a good cycle in your tank. As good as liverocks.com is, there is bound to be enough ammonia produced especially in a brand new tank. I don't think you need any fish to start the cycle.
I think that the old "cycle with a fish" must come from the days when the new aquarium was absolutely clean (dead). Back then, there was simply nothing in the tank living to produce any waste material. LR
is a very different situation.
40 Gal Hex, 10 Gal Sump, CPR overflow with Mag 7 return, Maxxima 35 RO
, 10K MH
pendant, 2 x 15W actinic, 1 yellow tail damsel, 1 high fin goby, 40lbs LR
.com rock, 1 red head goby, 1 algae blenny, Leather, blastomussa, sun, and hammer corals, green polyps, carpet anemone, 2 sexy shrimp...and more LR
critters than you could imagine in your worst nightmares.... Mantis in 5 gal