While I am not familiar with this route, I want to remind you that you will be travelling through the HOT Nevada desert in July. I hope you can find a in-route campground with good electricity and a swimming pool to cool down in. It can take a LONG time to cool down a rig once you set up for the night in extreme hot weather. My only suggestion would be to look over your route with a mapping application, at the same time checking RVParkReviews.com for possible sites near towns of interest. I found 6 listed in Beatty, 2 in Goldfield, and 3 in Tonopah.
Be thinking about what a strain this couple of days of desert driving will put on your truck engine, and be prepared. Also be prepared to possibly get stuck in the desert in an area with FEW populated towns. The US 395 route in California has more populated towns. You may want to check cellphone coverage maps before finalizing your route. Also be prepared to climb the mountain grade on Ca. Hwy 120 as you enter the Yosemite East entrance. Tioga Pass is listed at near 10,000 feet elevation. Good Luck, and enjoy Yosemite!!! The government shutdown SHOULD be over by July, and there would be full services in the park again.