A few suggestions; vampires should suffer bleeding from crits. Loss of blood weakens them, though total loss of blood wont kill them, they go comatose and are ripe for staking.
Vampires don't have power points. Being undead, they feed on the soul, via blood. Vampires will have a blood pool they consume to cast any incantation, even there mesmorizing stare, generating fear, shape shifting (be it into a wolf, bat or fog), casting traditional spells. A vampire must consume blood to replace its pp The exact blood cost is up to you.
You may allow a vampire to draw from its hit total if its pp/blood pool runs out. I imagine most vamps woulod be loath to do so. Besides...
I would use the control lycanthopy rules and mods to represents a vampires hunger and control over its actions. I would roll when in danger, threatened, its blood pool goes low, it is insulted, etc. Vampires are ruthless undead with no soul and are real monsters. They do not glitter or work as equals with lesser beings, such as human. All beast of blood are prey, eventually, and a silly mortal might forget, the vampire never will.
Spirit Mastery is a good list for vampires. but if yo0u have the mentalism companion, you might prefer to go with the Houri TP list and use mentalist spell list to represent the blood magic.