Bro,
dun mind me budge in on the your topic. I'm newbie in reef as well and just finished cycled my tank. It's a gradual 2 weeks ammonia build-up then sudden zero reading. Same for nitrite and nitrate.
You dun seem to have the same experience of a built up of ammonia n nitrite, it could be because of your live rock and activated carbon. I believe your tank is experiencing a series of "small" nitrogen cycles.
Not sure if a big cycle or small cycles are better, but in your case, your livestock will definitely survive better with smaller ones. With weekly water changes, i believe your tank will achieve the same state as a mature reef tank.
Happy reefing