So, the Midas blenny might be too aggressive. I’d recommend going with a different fish from the genus.
Here’s my Escenius lineatus (Linear Blenny)
Also Midas and Bicolours are risky around coral IME. Watchman gobies are often more boisterous gobies and may not be happy with other gobies in the tank. I’d stick to a Stonogobiops goby if you want the pairing ability, this will also take off the limit of the tiger pistol. If you want a watchman for the sand sifting then you’d be better with a Valenciennea goby since no Cryptocentrus actually does sand si. Here’s some of my gobies I own:
Stonogobiops yasha (Yasha Goby)
Gobiodon acicularis (Black Clown Goby)
Koumansetta hectori (Hectors Goby)
The filefish will most likely take a liking to Coral (Specifically the polyps). The Hawkfish may also eat ornamental shrimp, crabs and possibly snails.
The Stary Goby is hard to find IME, but other than that I think its alright (Could be wrong).
If you want my opinion I’d grab a Hectors Goby due to both the beautiful gold stripes they have on their body and the cyano eating ability (Actually, IMHO these guys are better than a blenny when it comes to algae - They eat it all, Dinos, Diatoms, Cyano, GHA, ect).