Looking at the photo's the obvious one is the front end needs some work, the rear isn't perfect, but as the rear surround sound isn't as import as the front's I wouldn't worry about that just yet.
As you also have front highs doing Atmos duties, the remainder of the speakers at the front end are very awkwardly placed as they are all inline with each other and the sound will just be to busy. This ultimately means that the front of your room cannot work correctly. If you wish to correct it, you really need to drop the front Left, right and centre speakers down. If you have room, the left and right need to be situated around the middle of the screen vertically (if space permits). The centre needs to be situated centrally below the screen. Only then will you know if the Anthem is taking away the mid-range of these speakers away due to the booming effect when placing speakers towards the ceiling
With the left and right speakers, an upgrade to the
A40's would be a better option as are shallower plus they can be mounted flat to the wall unlike the A10. This would also give you a much more balanced sound at the front end to with some improvements for sure
As for the rears, I feel this maybe a compromise that has to be lived with unless you have sufficient space to place both speakers above ear level on the side wall to the rear of the seating. From the photo's I cannot see it will be possible as the space looks to tight
I hope that gives you some ideas
