Depends on if Valot and Clark are played more as 8s. If they are, the forward/attacking mid group really is Royer, Kaku, White, Haksa, Barlow, Omir and Harper with harper not coming until the summer. Barlow skill wise is better a 4th string forward which is what he would be in this scenario. 6 guys for 3 slots is pretty normal.
The only problem I see is that a lot of the options are redundant, unless the new system doesnt require a true target man.
Haksabanovic probably isnt winning a lot of aerial duels, Royer would probably be his backup.