Newbie in South and Central Oregon

I'll be coming out of Northern California tomorrow to pick up a load around Medford, Oregon. I'm routed east (heading to Boston, eventually) and will be traveling OR 62/230/138, US 97, and US 20. I'm planning to call it a day in Hines, Oregon. This is about 450 miles and I can't find any truck stops further east on 20 until almost the Idaho border. It seems to be mountainous, I'm in a governed Freightshaker, I'll be loaded heavy, and I'm figuring on about nine hours of drive time. What kind of running can I expect on this route and what will it be like at night? I don't pick up until 17:00. Thanks.

 

I'm with Crete.

 

So far, so good. Plenty of legal miles.