Nice! Your first long trip, eh?
It's an easy trip - when in doubt, collect Superchargers along the way (better to stop or to charge extra before leaving an SC or both). Even though it's just 500 miles or so, don't forget the .csv file from evtripplanner.com so you can see which legs have more or less net elevation.
I'm headed that way as well (up to the Oregon Coast and then back down to commune with the redwoods), but alas, no miracle +1 has yet materialized. I'll wave as I pass by the area.