Did the OP mention the tank dimensions other than the length and I'm just missing it?
Looking at his other threads I can see that it is a 55 gallon tank.
First, consider the success people are claiming with the ordinary current marine light with mushrooms and zoanthids.
Second, consider that mushrooms and zoanthids have the same minimum light requirements as most stony corals.
Third, consider the additional power as well as the stronger 60° lenses on the orbit marine pro – effectively a 50% boost to intensity compared to no lenses – it was basically made for growing stony corals in a 55 gallon tank. One ought to be a safe bet, even if he went to hang at a little above the tank. If you wanted to talk about one of the other strip-based solutions that have no lenses, I would say the mounting them up off the tank would probably be a dealbreaker. There's no reason that should be the case with 60° lenses.
If you intend on keeping clams, or otherwise want a brighter than average tank, then a second strip or other supplementary light could be warranted. You want more than 30,000 lux in that scenario...maybe double that...so it makes sense, but only depending on your goals. One Pro will normally do it.
I just noticed that Current has a new light that is halfway between these two in terms of lenses (90°) but still have to read up on the rest. I think it's called the "IC".