Stocking small fish in 75g SPS reef

[Monkeyfish]

I'd like to keep a "large" number of small fish in the reef. The tank is a standard 75g with 6 x 54 t5 lighting, Vortech MP20, HOB refugium and Octopus (300?) HOB skimmer rated for a 135 gallon tank. Most of the corals are SPS.

Currently I have the following fish:

Royal Gramma
Sharknose goby (like the neon cleaner)
Red firefish
Purple firefish (and yes, the 2 firefish get along fine)
Bangaii Cardinal
Tailspot Blennie

Do you think I've reached the fish limit?

I was considering adding 1 or 2 of the following:

5 Red Striped gobies (Trimma canus)
3-5 Green Banded Gobies (Elacatinus multifasciatus)
Curious Wormfish
3 Barnacle Blennies
McCosker Flasher Wrasse (male)

Opinions and other fish suggestions are welcome.

[velvetelvis]

Sounds good, except I wonder if the Banggai and/or the gramma might try to eat very tiny gobies like the trimmas.

I've never kept green-banded gobies, but everyone who has loves them.