MC,
I just bought coralife pc lights. I'm going to keep it FOWLR for a while. The tank is deep so if you were going with anything other than fish I would go with the halides. I have the oceanic stand and it has a small opening in the front so it is difficult to get a large sump under there. I've seen other stands that have the double doors and I would probably opt for one of those instead. A 20gallon is about all I could get in the stand. I would redo the rock work that I have but I rescued a blue tang and four sea serpents and don't want to crush the serpents or stress out the tang...so the way I have it now will be that way for a while. As far as pounds go on the rocks, I don't know. I have what's in the tank and another 40 gallon trash can full of live rock. The rock that's in there now isn't back against the wall, the fish can swim behind it...hope that answers you questions