With what you already have, I would go anthias and you like Bartlett's so I would go with them. Get a group of them, and before you buy them make sure they are eating frozen. Anthias are great fish, but can be a pain to get to eat. In a couple of days if they aren't eating then you are in a bind and they don't do well overall at this point. With your large group of semi-aggressive fish I would also consider more lyretail females and or a group of pink square anthias. Pink squares can get a little rough sometimes though. Another more peaceful option would be about a dozen more chromis.
With a tank as tall as yours I would look for fish that would work the upper middle water column to add to the look of the tank. You have a lot of options that I didn't even mention but options are nice to have in this hobby. Just my 2c.
