safe travels! don't Tapatalk and drive!
i've had a couple big moves in my life. 3years ago around this time i moved from the Bay/NorCal back to Seattle. i was in a similar setup - a 15foot Uhaul and my car on a trailer:
i took it slow and made it a 2 day drive by myself. it was really, really scary going through the the Siskiyou Mountain pass in the dark, rain, sleet and fog in the dark. i was around some big rigs but we all drove slowly (around 25mph) up and down and around the mountain curves.
have fun spending some QT time w/ your BF. be safe.