Please have wallets (at least Windows) ready and at least one pool set up before launch (and not like 15 minutes before so everyone is scrambling and it becomes a train wreck).

I know no one likes premining but I would like to recommend mining a few blocks beforehand so that it is tested. Maybe set the reward for first X blocks be zero or really small values.

Really the biggest things to me though are transparency, not rushing to meet a deadline, and frequent edits to first post that explain the current state of the coin. See the ronpaulcoin as an example.