Only problem I see is your "CC base". Not that they are not good, but youll need more maintenance on CC. They tend to trap dirts and food particles. And the cleaner crews can't get to them cos the grain size of the CC are too big for them to handle.
Since you do not have too much creatures in the tank now, if I were you, I'll change out the CC and put in like 50 lbs of fine sands. Usually to save money, you can get the Southdown playsand from Homedepot, and since you already have LR, the LR will seed the sands and make them live. Wait a few more weeks, then add the clowns.