Hello there,
Are you asking if the mix of fish listed are a good mix from a compatibility standpoint? Or are you asking if your tank size is a good fit for this amount of livestock? BTW, what is the tank size?
The Anthias are reef safe and need frequent feedings throughout the day. They are super active fish with a high metabolism. The Flame Angel is hit or miss when it comes to being reef safe. I’m. Not sure what kind of corals you intend on keeping. The Yellow Tang is always a great addition as a utilitarian fish for algae growth. One of my favorites. Clownfish can be mean as heck, despite their Cute Nemo Reputation. My female clown is the spawn of Satan. The Yellow pyramid Butterfly is considered reef safe/coral friendly among most and has been successfully kept in many reef tanks. They also do well in groups. The only wrasses I have experience with is the Melanurus wrasse. So can’t comment on the 3 flashers. I know sometimes if you introduce two female wrasses, you could possibly end of with both of them turning male over time. And then you could have issues. I’m no wrasse expert though. Royal Grammas are a great addition to any reeftank. Stick with one. They can sometimes be kept in groups successful with the right set up. I didn’t have any luck with keeping more than one. Probably due to tank size.