Thanks for those tips guys.
Are there any other rules you all tend to enforce at your tables for this campaign? I'm a long time player, first time DMing, so I want to have my ducks in a row. Figured I'd pay some of my DMs back and let them get a turn at playing.
*Spoilers for book two follow*
For that antipaladin, if he does decide to play as a dhampir, do you think it would be fine to give him some hints towards his heritage being from a certain individual from Ghastenhall? I told him to make up his back story and character first and if I think it'll fit I'm planning to drop a few, fairly obvious, hints as to where he comes from.