Sps right below, LPS around the outside of these, softies around outside of these. I think 1 would be fine. Any sps just stick right in middle and high, if directional like victoss said you should have no problems keeping sps alive below the bulb.
Ya I was thinking raising it up higher to get the spread where then you lose some intensity but you would still be able to do sps right under them I would think. That being said your more interested in lps and softies so 1 should be good.