Hi bro, u will need
1) Canister Filter/Sump, I would recommend u to get a sump.
2) Skimmer
3) Light, since yours is FOWLR, FL will do, but u might wan to invest on a T5 HO so that if u decided to switch to soft corals, u do not need to change ur lighting system.
4) Fan/Chiller, minimum a fan for a FOWLR, some don't even use a fan becos the tank temp is below 30 deg. If u use a fan, u need to constantly topup evapourated water or get item 5
5) Auto topup system
6) RO/DI unit, personally i am not using one but would love to get my hand on one.
7) Test kit, impt and not to be ignored.
HTH.
Regards,
Wilson