Plague Leech (by a mile, this talent is amazingly powerful, other two are literally useless)
Purgatory (AMZ is fine)
Death's Advance (or whatever you want for CC)
Blood Tap
Death Pact
Whatever you want for the 90 talent
Defile or BoS (for most people I would recommend Defile).
I'll likely be posting my full WoD guide (and by 'full' I mean literally over 8k words) to Blood, if not here then at least on Sentry Totem hopefully over the next week. So if you want more information behind these choices, it will be available there.