New to Saltwater - So Many Questions!

[intarsiabox]

Your choice of fish is fine, all stay small and are usually peaceful. You can add all 4 fish you listed in a 26g. The blenny and goby are more sitters than swimmers. Don't be alarmed if your firefish disappears for a couple days when first introduced to the tank, they are shy at first and will hide in a hole in the rock work.