That's how my scape is as well. Because I knew I wanted to stock on the heavier side as far as fish goes. And I hear you about the 3rd light and sps. LOL. I have 4 radion xr15 pro gen 5 and I have a hard time hitting 300 in my tank at the highest spots on my rock work. And that's taking the reading woth all flow turned off and diffusers off the lights. So if I ever do go sps dominant like I would like to down the road I'm going to have to add at least 2 more xr15's to the tank unfortunately. So for now I'm just gonna run it lps dominate and do low light.