One change I will make, in the interest of safety and better performance, are upgraded braided brake lines front and rear. They're black, so they won't be too obvious. Oh, and fresh tires of course — Bridgestone BT-45 in OEM sizes.
This bike is a pleasure to work on. It's obviously been well-kept in a dry environment. There's no stuck bolts, nothing's been stripped, man-handled or modified. Let's get this thing back together.