I've got a pair of #45s and a pair of #53s, plus some singles in lighter weights. I use them for clean and press, shoulder and arm work, and some mobility stuff now.
Start off lighter than you think. I originally started with the #53s thinking I was decently strong at barbell work, so the transfer to kettlebells would be easy. It wasn't. After a few months of trying to make that work, I dropped to the #45s which was much better, and to be honest, I could've started at #35-40 and been better off long term.
If you think you're going to like it, price out competition KBs vs regular ones. The feel, etc... is much nicer, and prices have come down.
I like Dan John's and Mark Wildman's stuff -
https://www.youtube.com/@DanJohnStrengthCoach.
https://www.youtube.com/@MarkWildman.
One thing the Russians do that I find interesting is Grievoy Sport. Basically long cycle heavy cleans and presses and snatches with heavy kettlebells -
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If one had the constitution for it, or was limited to a very small area to lift in. You would do quite well with something like that.