Wow! Wishing you a fabulous trip.
We lived in Sparta NJ for 10 or do years of the 13 we were in the US, and drove across the States and Canada 5 times in all and can remember every one of hosed trips extremely well. They were by car rather than bike - but some interesting cars nonetheless - a 1993 Nissan 300 ZX, a 1997 BMW M3, a 1999 Merc SLK and a gool ol' Golf GTi. The most northerly route was the Transcanada Highway and the most southerly I10. And whilst we didn't drive there, we have also done several weeks driving around Alaska. So I know what you are doing and how much fun it will be.
Have an AWESOME time and stay safe.Can't wait for the reports.
One of two known 'ristis in Vietnam!