Sure thing!

Want as my mentor: uuuuhm we start with the easy questions. Uncle Junior, I think.
Bake cupcakes for: AJ <3 and Adriana.
Lend my books to: Meadow, mostly because she looks like the one person who'd be interested in reading them in that entire bunch.
Put thumbtacks on the chair thereof: Paulie.
Have a crush on: I'd be tempted to say no one because seriously, those people are all bad news. AJ probably.
Pack up and leave if they moved next door: Ralph Cifaretto and/or Phil Leotardo. I'd run like nobody's business.
Vote for President: Silvio all the way.
Pick as my partner in a buddy movie: Silvio again. Yes, this one is more because of the actor, but.
Marry: NO ONE. If I really had to pick, Melfi. Or Tony's cousin Tony before he went back doing mafia stuff.
Want as my boss: oh gosh, Melfi again. At least she wouldn't kill me if I did something wrong.
Sue: Phil Leotardo. He drove me so crazy in the last couple seasons that he deserves some suing.
Want as my best friend: Adriana probably. Or any of Tony's kids.