Welcome from St Catharines.
You might want to consider joining Hamilton Model Engineering Club, we meet at the Hamilton Steam Museum every 3rd Sunday at 1300. First meeting is Sept 17. A few members build/built live steam engines. Also Golden Horseshoe Live Steamers, who have a track at the museum. They mostly run engines, not so much building them but good exposure for you. One advantage of joining is that many machine tools get sold without ever seeing the light of day on FB Marketplace or Kijiji.
I (and my wife) have moved a King 1022 lathe and an Atlas MF mill downstairs on a 2 wheel dolley. We also moved a 600lb Cincinnatti grinder downstairs, thankfully the new owner moved it out
Some disassembly but quite manageable even at +60 years old.
Whatever machines you get, put a DRO on it. Life is too short to start counting graduations on dials at our age. As for metric vs inferial lathes, most are inferial even the Asian ones. And they generally cut both types of threads, although most of your threading will be tap and die, not on the lathe.