I bought a blue Super Single Six Convertible back in the late 80s or early 90s. Finest SA .22 for the money that you will find.
The "super" is the one with adjustable sights. I highly recommend adjustable sights on a .22LR, even if you never need to adjust them, they're good to have, just in case. With .22s, there's no "adusting the load" to shoot to the sights, all you can do is try different ammo until you find one that does. OR just get adjustable sights and not worry about it.
Mine has the longer 6" (or 6.5" I forget which it is), shoots great. I've only shot about two half boxes of .22Mag over the last 30+ years, I don't think it worth the cost.
I don't see any point to a trigger kit for the Ruger SA's. If they aren't good enough to start (in your opinion), a little careful work will give a good trigger pull. You might want to check out the "poor boy" trigger job, but do use caution, it could result in a pull LIGHTER than you want...