not trying to put a damper on your plans but i would rethink the whole thing. the tank/stand is just a small part of the purchasing your going to have to do. Can you afford the LR, Sand, skimmer, Lighting, Pumps, ect. you will need to get this tank up (a 90g or a 180g) and running. And once you do will you be able to afford all the things you want to put into it and also be able to afford to maintain it.
Start looking at the costs for a complete system and let that dictate what you actually by. I mean you don't want to spend every dollar on a 180g tank and not be able to set it up properly with adequate lighting, filtration, LR, coral, fish, Inverts, ect.
