I wouldn't worry about supplements at all.
As long as it gets lighting and moderate flow you are fine.
Not sure what your long term plans are but if you plan to get into more sps (acro's especially) - you would want to reserve the "top shelf" spots for coral that need the intense lighting. Anywhere in mid-tank and or lower tank with direct lighting is fine.
From what you describe the flow sounds fine - sounds like you almost have a wave motion going.
I have one that started from a frag. They are very hardy corals as long as you have decent water chemistry (and decent is good enough).
They will grow out into a nice bushy colony.