I like to have a wide spectrum of intensity in my tank. You'll find SPS that will grow under as low as 100 PAR but in order to achieve the best color sometimes you need 500+
I think you'll be ok, as the corals grow upward you likely see faster and faster growth and shifts in color from the increased PAR of the shallower water.
Also, I think the low 100's at the sand bed is about the perfect range for many of the color finicky LPS like chalices and acans. If you give them much more light than that you often zap nice colors right out of them.