I am a she, by the way.
So you think I should just keep both?

Oh, sorry.
But yes, you may as well keep both. The only real downside to being a Vampire is the fire resistance, but you can just keep a stock of potions ready to nullify that.
Here's a question though; In the lore, doesn't both becoming a Werewolf and becoming a Vampire like, double your speed, strength, and senses? Wouldn't becoming a Vampire on TOP of being a Werewolf like, quadruple everything? Even if you're not transformed, you should be able to outrun and outdistance a DRAGON in a state like that, not even counting other perks.