I think it will be too much unless you raise it. That is pretty dependant on the reflectors. I believe they are not that good in that light, which would be to your benefit most likely.
I want to have the light a good bit above this tank since its rimless and I want it to be able to be viewed with the whole tank including the top open. I also like the whole timing in different bulbs throughout the day and do it on my 75 with good growth. I also know its a novelty but i do appreciate the moon light as well.