Afraid my sps experience is incredibly limited.
The live rock really seems to help the dry mature faster though.
Love your setup. Those are some serious drains!
Great on you having dual return pumps. Only thing that comes to mind is that 200w heater will have to work pretty hard. You might consider adding a small backup heater and maybe an inexpesive temp controller.
I have that same fuge light and it works very well.