Your tanks looks great so far, nice rock work..however few tips below (not meant to scare you as it can be then with canister filter...but is challenging)
Hey I was in your position setting up a tank...letting you know if your doing corals where water chemistry is very important, I would go with a sump unless you have no problem cleaning out what looks like to be a Fluval Canister Filter...possibly fx5?
Woudn't want you to waste time fighting with nitrates and phosphates like how I was and still currently fighting with some phosphate problems..
Good Luck with this hobby, very addicting...drains your wallet however...it's worth it! If you want to have a look at my tank with a recently installed sump you can check the the thread "Impossible Dream...."