Okay.
If you just change one word in this statement from remains to artifacts, we do not have a dispute. Widely accepted data supports all your other statements. Albeit, I think the Calico site in California (200,000 years old) will eventually be accepted by the main-stream. (Probably not in our life time though)
George Carter's book, Earlier Than You Think, is a good read on the Calico site.
I expect we'll have accepted dates of 50-60,000 years old (in our life time) in the Monte Verde area in South America.
I mean of course, items discoverable which prove human residence beyond any doubt. Not just their own bones.
As to Calico, that is a real bitch, isn't it? It is like somebody a quarter million years ago transported a few homo erectus to California by UFO just to astonish us. Maybe erectus COULD float around the N. Pacific rim, though, who knows? One thing is sure, whoever MHB at Calico left no living descendants in the present.
Of course at Monte Verde, we already have humans proven some 33M years ago. At Pedra Furada, some evidence that Africans, perhaps accidental and without descendants in the present, may have come ashore and lived for some generations....
The reason Monte Verde is so critical is that this is where, and getting close to WHEN, that famous Original Boatload of Asians landed, from whom TAIP the whole Amerindian population of both continents, and also the islands and isthmus between, is descended TAIP.
Lang, who had a direct contact to God I guess, suggested it landed near Copiapo, IIRC.