K...so...we ordered our lights last night.

4x400w MH/ 4x80w T5. It's not in a retro, it's all in one housing. I'd prefer the lights to be set up without a housing b/c it's easier to get to something to change/fix it without having to take it all off/apart. But...we couldn't beat the price.
We're going to get our skimmer this weekend. There's a pet store that's trying to get rid of a Nautilus skimmer. We talked to the owner and he said just to make him an offer, he took just over $100 for the last one. We went Sunday, but he wasn't there so we're going back this Saturday.
We want to order the bulkheads this week so our friend can drill it for us soon. We're going to have 2 drains, 2 returns and one CL. Any advice on what size bulkheads to use?