I work for Hospice as a Chaplain & a Marketer. So I'm in and out of professional offices daily, but I also do visitations with families.
My job calls for a more conservative look, but I wish I could get away with a more vintage southern look, I really dig the Billy Reid kind of style.
Then you should keep it to navy and grey. Save the three-piece seersucker for relaxing on the front porch on the weekend.