Getting good snap ring removal and spreader pliers, make or buy a few tools for clutch disassembly and follow the service manual as mentioned. Measure input shaft clearance before you start disassembly and do each sub assembly separately. Don't throw any seals or rings away until you match with kit and reassembled the sub assembly. They really are not hard once you have a few under your belt. If the trans was good before overhaul, you should have no issues. There are some rings and spacers that have different clearances, and it would be nice to have a selection to check during reassembly to get your clearance where you want them. Maybe your old transmission guy would give you access to those parts and a few pointers as you do the work, for a lunch or beer.