Attribute of 6 in your thing, Skill of 6 in your thing, Specialization in your favorite part of your thing. 12 to 14 dice before Cyberware and/or any Magics (Foci, Adept powers, Sustained spells, whatever).
15 Dice plus specialization is easy to hit for your thing.
10 to 12 Dice in things directly related to your thing.
6 to 8 Dice in the things Shadowrunners are expected to be competent at, but are not at all mechanically linked to your thing. Or be able to fake them somehow (Spirit powers, Gear, whatever)
Also, have a fake SIN, a vehicle, and a Lifestyle, or some way of faking them. (SINner quality, being able to fly, whatever.)
Edit: Presuming you mean Player Character. NPCs have whatever dice pools the GM wants them to have.