Yeah the kit to replace the cable with the brain box or internal is ok. But just trying to keep the price down. I have also rebuilt them before the problem is a pro will be able to source the parts cheaper and get all the right hard parts replaced. Sun gears will break if you have too much tq if its not replaced with one piece hardened basket and splines. Not to mention the stack of good snap ring pliers you need to get the job done.
Looks like the op is all set with local tech to build him one. Just make sure he keeps the cost down for you and uses top quaility soft parts so it will last.
Also to the op i would hang onto the glide they are popular option for collector car and can always be set aside for reinstall one day. Just have it built and set it on the shelf until the time is right.