I took my monk to Fay at level 6 as iksar. By 8 I could turn in belts/pads in Kaladim, and could bank in Kaladim by 10. I'm warmly in 3 cities, not counting Ak'Anon, and can bank in one of them. So, it's definitely doable and easier at lower level because of CB bein decent from 6+.
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