Hello! "NEWB" with some Q's

[magikof7]

Titus it is an Oceanic Biocube, I have a cannister filter laying around from my FW tank I could add that for mechanical filtration. I have not gotten that far just yet, I didn't think it was possible to add too much to it.I read a lot of mixed opinions on cannisters with a reef.
I had been looking at Mods on RC but most just add the media basket a skimmer and ATO.
It 2 coralife 36 watt pc bulbs. 1 50/50 and 1 10k with 3 led moonlights.

Id like to have a mixed reef with a couple of blennies and Gobies (eventually)