that's a heck of a long ride, diagonal like that. Must be 8000kms? 5000 miles?
vaccinations here are a fair amount behind the UK, so I'd be surprised if it will be possible for you, just as for me hoping to bike in Europe and UK, another summer bust is my feeling as of now.
When I planned it on Komoot it came out at 4000 miles going Quebec, Montreal, Great Lakes, Chicago, across Kansas, Denver, Independence Pass, Monument Valley, San Diego.
Yeah, I agree that it's very likely that I won't do it this year but that's cool. It's an enjoyable adventure not an urgent mission and there are much more important things going on in the world than my bike ride.