I will need a skimmer if I have a 365gph canister filter?Gotta be careful with glass lids because it will slightly cut down on light getting to your corals. Ive had all those fish. Id suggest that if you get the bicolor blenny that in that tank he needs to be probably the only fish. Can be territorial. Cleaner shrimp are great. I had a 12x12x12 tank that had a purple firefish and a cleaner shrimp it worked out great. You could get 3 regular firefish and a cleaner shrimp in that tank easy. If you can find a small hob skimmer that would work wonders in your system also.
Yes post up pics or stats on the light.