Best route from Minden, Nv to Groveland, Ca

There seems to be many options with steep grades. I dont mind grades but would prefer to stay off the steepest ones. I see the most direct route might be traveling down 395 to Tioga Pass and going though Yosemite but I know the pass road out of the Mammoth lakes area is a pretty hefty one. Any suggestions....were heading over to Yosemite Lakes campground(TT). (37' motorhome with toad)

Not sure where Yosemite Lakes is located but I prefer Hwy. 50 over to Hwy. 49 or to hwy. 99 then west to Yosemite.