You'll find arguments on both sides of the "water change" debate.
To me it makes no sense waiting while nitrifying bacteria builds to a level of the super high ammonia and nitrite, only to once again fall when those levels naturally come down.
IMO by not doing changes you are hindering the progress of other beneficial and desirable things like coraline algae and any cool hitch hiker corals or other organisms.
Also in the FWIW department I always try to use water from an established system for changes.
To quickly push past the nitrite/trate stage I use Fritz Turbo start 900 on all my set ups now.
Of course I know you don't need it but needing it and getting good results from it are two very different things. Over the years I've seen countless success stories with it, from saving early stocking, to over stocking, to rapid stocking. Most recently since working with a few pounds of dry rock, I've been able to greatly reduce cycle time and I've had a number of customers that have told me it got them over that "stuck Nitrate hump" while cycling.