You most likely wont get a spike if you moved all of the live rock over most of the BB will be in them. That xenia will haunt you lol i'm still trying to get it out of my tank.
Bluzepher if you go with a bare bottom and a small bio load you can get away from a skimmer A bare bottom tank is a lot easier to keep clean and free of any detritus
Most people create their own problems by not following the basics and refusing to stock appropriate to their system. Gregcoyote 2013
SPS = Stability Promotes Success