Console command to finish all the Dawnguard questline as a vampire? Some scripts started messing up, delaying a lot and stuttering, not really a surprise since I added some mods mid-game, including the Serana Dialogue Add-On, what console command(s) would I have to enter to finish the quests, and have her AI act as if I did?

I figure I can fix the lack of stability just by starting a clean save (being added mid-game and used as my follower no less can't be good) and entering the command so I don't have to redo all the quests and dialogue with her.