Bonnie's shop is here from Tumbleweed, so you're covered for potions. Can't help you with a tailor, you know how I am about clothes, so hopefully someone has a good recommendation.
The Library of Alexandria is around, it's employees are on here so maybe you can talk to them about what you might need. There's also a few bookstores, though I'll warn you that Chastity's Nook is for, uh, mature content.