Final fish needed

[punkieg0]

hi all,
I am looking for what I think will be the last fish for my current tank.
45 gallon JBJ AIO up since Sept.
Current stock
2- clownfish
1- filefish
1- flame hawkfish
1- cleaner shrimp
1- peppermint shrimp
various crabs and snails

I think I am able to have 1-2 last fish in this tank, I know I am somewhat limited due to the flame in there.
Right now the clowns have taken the from left of my tank and usually just hang around some rock work middle to lower and along the corner there. The flame is happy moving through the rock work and the filefish just swims where he likes all over.
I don't have much that occupies the middle to upper portion of the tank so I am looking for some options.
A few considerations:
firefish
court jester goby
lubbock fairy (only while small..this one might need to be moved as they grow)

I would prefer some personality in the tank but I don't want to add the tailspot in there due to the hawk.
Any recommendations on 1 or 2 to finish off this tank?

 

[Squidward]

Bicolor angel. Plenty of swimming all around and over the tank.

 

[TheShrimpNibbler]

Royal gramma. I love mine and it stays in the upper portion of the tank. Flasher wrasses would also meet your needs. A firefish is one of my personal favorites though, and it would definitely be one of the ones I chose.