My recommendation is vague.  I'd suggest anywhere on the edge of the Sea of Fallen Stars.  That way you have the most options in terms of story maneuverability.

If its rogue heavy I'd suggest Westgate.  Otherwise Sembia is largely unwritten save for their wealth and love of adventuring.  Other than that it was ledt to the GM to develop.

I shouldnadd that my character excels in cities and politics but isn't a requirement.  Role-playing a fish out of water is fun.