I'm not the PF expert on SWCG, but I can give you these starters:

First: You are not switching over from chlorine to salt, you are simply using salt to generate the chlorine for you since salt is Sodium Chloride--you can always add additional chlorine.

Second: There are some simple, do-it-yourself systems, but they are for smaller pools--12,000 gallons, max. Some don't even need plumbing.

Third: Many of the better systems require some wiring, handled by a licensed electrician. But an experienced do-it-yourself-er may be able to handle it. I think some require 220v service.

Fourth: You will need to add salt to your water and test for it. Solar salt is usually best.

Fifth: You will need to have different chem levels than you are used to--CYA around 80ppm but FC only around 2 or 3.

Sixth: You will probably find your pH rises all the time and you are adding Muriatic acid frequently. There MAY be levels of T/A and CH that control that--again for the experts to guide you.

Seventh: You will probably LOVE it and wonder how you did without it. I don't know. I find adding LC ever other day or less to be pretty low-level in terms of effort. But everyone here who has one loves it! Personally, I prefer to spend the jack on a top-notch remote control robotic cleaner. But that's just me.