personally, I would not suggest any fixtures until you provide your live stock. As it is very different from keeping SPS
with only 1 16" fixture with 120 degree optic lenses vs using the same fixture for soft corals.
Please keep in mind the higher degree of lenses it uses, the less PAR it will provide. If you are doing SPS
, I would suggest 2 fixtures of any 120W bridgelux fixture or 2x72W fixtures. It would also depend on if your tank has a center bracer, if you do then 1 120W fixture would not work simply you will have a huge shadow area right under the light