I think theres plenty of room for corals. Even though your losing the potential front and top surface area of the middle, your gaining the surface area of the left side of the right island and the right side of the left island. Does that make sense?
I have a lot of various frags and mini colonies, mostly sps.
Fish:
Majestic angel
2 Ocellaris Clowns
Mandarin
Male Lyretail Anthias
Solarensis Wrasse
Mimic Lemonpeel Tang
White Watchman Goby
Orange spotted goby
I think this is enough for the tank now, but once the corals grow in I wouldnt be afraid to add a trio of cardinals or something.