Spree was one my favorite players of the 90s. He was terrific in New York when he handled the ball as a shooting guard or from the wing. I think that's the only issue with this idea. Kemp is going to run the floor, and did so magnificently with Payton handling.
Add Sprewell, who was good with the ball in the slow moving offenses of the East, and Kemp and the rest of the Sonics don't fire as quickly. Also, where does that leave McMillan and/or Detlef?
Unless you're going to create a small ball lineup like Golden State? Kemp as a center, but basically playing as another PF?