My advice....... take an extra day and do 2 lane blacktops. If you're going to do I-80 and I-90, you might as well trailer the bike.
Better scenery...... better food...... If you see something interesting, you can just stop to look without a semi trying to turn your bike into a hood ornament.
You won't have that beat up feeling when you get there.
You'll also burn through less fuel.
, I took I-80 and I-90 thinking I would get there sooner. Two day trip. Well, I did cut a couple hours off, but I had to take the next day after getting there to lay around and recover.
, I took all blacktop roads.... didn't touch an interstate the whole way from home to Rapid City, where we were staying. Two day trip. Took an extra 2 1/2 hours (big whoop).... but the next day, I rode to Wyoming just to do lunch, and it turned into a 350 mile day of exploring.
Did the same back road, 2 day route on the way home...... unloaded the bike in the garage, and went for a ride.
Use a GPS, set to avoid Interstates, and enjoy the adventure
Just 2 cents