I contracted Sanguinare Vampiris, should I hurry up and become a lycan before I transform into a vampire, or after?
You have to drink the beast blood the second before you transform into a vampire. Save before just in case you mess up or don't like it, the disadvantages of both vampires and werewolves are present and really hurt each other. In beast form during the day you have no regen whatsoever, which means once you run out of stamina the fun is over as you can't run or power attack at all. Also for me, I'm not flagged as undead so no Necromage buffs.