Hwy 50 in Nevada is on the itinerary, weather permitting at the end of December. Probably won't find a lot of places to paddle and don't plan anything other than day trips or maybe an over night somewhere on the way home taking the southern route.
There is some pretty cool stuff along Rte 50 in Nevada; I’d get the Nevada Delorme Atlas and Gazetteer and have a look before you go. Weather conditions permitting I’d take what open water you can get in western Nevada.
Just glancing at the Delorme, from west to east: There are a couple of lakes in the western part of the State; Lahontan Reservoir, Carson Lake in the eponymously named Wildlife Management Area and Stillwater Marsh in another nearby WMA.
After that things get drier, but there are a bunch of National Forests (cheap to free camping) further east along Rte 50 (Shoshone Mnts and the Toiyabe Range). And Great Basin National Park near the Utah border; not exactly a Yosemite or Yellowstone on the tourist list.
One last thing. I’m not an I-phone or other communicative device guy by any means, but having some piece of electronica in the truck to pick up a wi-fi (rest area or truck stop) weather forecast is invaluable for cross country travel.
Not the forecast for where you are now, you can look out the window and see that, but the forecast for the part of the country you’ll be in 1000 miles down the road. If you are rolling non-stop on an inter-State 1000 miles is only fifteen hours away; that driving distance forecast should hold pretty firm, and if that locale is predicted to be fugly I’ll find a place to wait it out.
Same for any brushes with a metro-area. I don’t need to go around the beltway or loop road at rush hour. I have better things to do, like sit all by my lonesome in some WMA pull off, reorganize the truck, make a cup of coffee, sit and look in peace. . . . yeah, I’d much rather kill a couple of hours that way versus creeping along stop-and-go in traffic.
Have a great trip. There is a lot of elbow room in Nevada, and a lot of beautiful country. Stop at one of the WMA or National Forest stations and chat up the staff, you never know what hidden treasure they might be willing to share.