For a female a 2x3 cage will be too small I am afraid.
As for should you go with a Blood a few years back I was wondering about the same thing and was going back and for with the idea until I got to held one of my friends Kara's adult females, that's what really seal the deal for me.
Do your research and if you get a chance handle a larger individual.
And shoot an email to Kara she will answer any of your questions you might have regarding Bloods.