I like the new aquascape..i bet your tangs are loving the extra space! I redid mine last week to give more space aswell..i'm not a big fan of the tank full of rocks to the top look. As long as there is about 1.5lbs of LR per g it will be enough to keep the tank stable. I personally think your tank would look even better than it does already with MH
I just love the shimmer and shadows it brings.