Originally Posted by
seedsbelize
I've always heard (and practiced, due to limited availability) that rounding down by up to 2 mm is ok. So you could conceivably be able to get away with just the two lengths. 282 and 280. Brass nipples last longer. Be aware, when tightening the rear, to not overtighten the drive side too early on. It's an easy trap to fall into when in the early dishing stages. No need to use heavier spokes on the drive side. And be sure to lube the threads before lacing them. I use 30 wt motor oil.
Robbietunes has a good source for spokes and nipples online. I can't remember it off the top of my head.
Good luck and enjoy.
True dat, about lubing the thread, even if (maybe especially if) you have prepped them with a thread prep compound. But I disagree with the motor oil as the lubricant. I was using chain lube and not having particularly good results. I would still get some sticky nipple/spokes. But then Jeremy Parfait of Alchemy Bicycle Works recommended I use bearing grease like Phil Wood. Night and day. Man what a difference. After I started using that, easy-peasey.