H. I keep a mixed reef in my RS 300. Over 3 years now mostly frags w few larger lps. Just had 2 Bommies which filled in and kept lps lower and sandbed w mix sps up the structure. Stylo monti seriatooora acropora. U have a good looking scape . Just a thought u may want to open it some and vary the heights. May allow for more room for fish to swim and coral growth. Far from an expert but just experiences. Good luck w new system