Sure that would be fine, I would however make sure that you at least have some rock work that extends at least 2/3 up the water column so that if it chooses it can move up for higher light. I did fine with 360 watts of VHO over my 90 for a while. Reason for MH lighting for a 90 is because it is 2 feed deep and only the MH bulbs will be able to penetrate that deep effectively.
You should be fine with that lighting.
Thomas