Ah, that's awesome. When I make a Rouge, it's going to be Ranger/Bard.
Also, you don't need to kill everybody to become a Blood Mage. To unlock it, you need to make a deal with the Desire Demon in the Fade during the events at Redcliffe. You can reload a previous save once you unlock a specialization, so you don't have to live with that choice. :P
Yeah, I'm on my second playthrough. First file was a Human Warrior (Champion/Templar), and now I'm working on a Human Mage (Arcane Warrior/Spirit Healer). Might possibly go with Blood Mage instead of Spirit Healer, but I'll see how it goes.