Sounds like a good plan. Remember many of the older cameras are sort of different than their more modern counterparts eg. you'll see DIN instead of ASO. The shutter speeds do not often match up with the geometric progression of the aperture scales so it makes exposure settings a little more arcane. Arcane...that is a good word to describe the old rigs. You have to get to Leica IIIG really before you start recognizing things that you see on a later model camera. Things to look for upon purchase. Check shutter curtains thoroughly. Rangefinder patch and alignment. Dry fire the camera while inspecting it. Fire it at different settings and look for anomalous type stuff. Rangefinders tend to be more temperamental than slr's part of the reason they were eventually supplanted by the slrs.
You may want to look into the Minolta CLE. A bit more modern type of rangefinder very reasonably priced on the used market right now but just do your research so that you will know what you are up against. The CLE is a Leitz Minolta joint effort and a M mount camera. Something along these lines or M2 M3 Bessa would probably be the best place to start if at all possible. Looks like you are sold on the rangefinder on paper at least...that is a good thing...we need more rangefinder folks in the world.
Well its atleast I like the concept much more than slr's. I dont think i'll be doing macro, or things thats require very precise framing anyways. Mostly will be just landscapes, potrait with background context, amusing sightings. Im the type that goes touristy and not the "today im going out for a shoot at so-and-so location" kind. So pretty much the more pleasant styling will be better to carry around 24/7. Minolta CLE runs on battery 😅