Spend the extra money for green board (Mold and Mildew resistant) sheetrock. Do it once and do it right. Even if painted regular rock is very susceptible to mold/mildew unless it's wiped down once or twice a week.
Absolutely. I basically sat down with what I wanted in mind, went through a c*** load of graph paper and came up with that. I based everything off my skimmer requirements. Let me know when your ready.
Yep it's a Triton 5. It will be replaced with a MAG sometime this summer.