1) I would take a can of WD40 and some #000 or #0000 steel wool and work the rotors over and see if they're smooth or pitted. If pitted too badly then carry them in to your local parts house and have them take a clean up pass off of them to make them new & true.
2) It's probably good insurance (peace of mind) to rebuild the calipers, and ensure that they're not rusted up from any moisture that might have been in the fluid over the years. Same for the seals, IMO.