Not sure if the OP has left for his trip yet - here are some brief notes on my recent (early June 2017) trip from Charlotte, NC to San Francisco. Did it in my ’15 85D with my wife and small dog. The trip was a breeze - most of the miles were on autopilot, and we gave ourselves 7 days to complete the drive. Only saw 5 Teslas until we crossed into California. If Tesla had a supercharger between Little Rock and Oklahoma City, we could have saved a couple hundred miles at least.
Day 1 - Charlotte, NC to Nashville, TN
Superchargers: Asheville, Knoxville
Destination charger at Hutton Hotel, Nashville
Day 2 - Nashville, TN to Little Rock, AR
Superchargers: Jackson, Memphis, Little Rock
Destination charger at Holiday Inn - Airport, Little Rock
Railroad buffs will enjoy the Jackson supercharger - located right next to the Casey Jones birthplace/museum.
Side trip to Conway, AR to visit family.
Day 3 - Little Rock, AR to Burkburnett, TX
Superchargers: Texarkana, Sulphur Springs, Denton
Destination charger at Best Western, Burkburnett, TX
Sulphur Springs may have been our favorite supercharger stop of the trip - located next to an interesting Main Street with several shops/restaurants.
Day 4 - Burkburnett, TX to Albuquerque, NM
Superchargers: Childress, Amarillo, Tucumcari, Santa Rosa, Albuquerque
Couldn’t find a destination charger hotel, so settled for Staybridge Suites near the airport.
Day 5 - Albuquerque, NM to Sedona, AZ
Superchargers: Gallup, Holbrook, Flagstaff
Destination charger at Best Western Inn at Sedona
Highly recommend Sedona but beware that there is serious road construction on the 2-lane road down into the canyon from Flagstaff. Several miles of dirt and gravel. Still worth the drive, in my opinion.
Day 6 - Sedona, AZ to Barstow, CA
Superchargers: Kingman, Needles, Barstow
Stayed at Ayres Hotel in Barstow (location of the Supercharger)
Very windy all day but no range issues. Took 12-mile side trip to see Meteor Crater.
Day 7 - Barstow, CA to San Francisco
Superchargers: Buttonwillow, Harris Ranch, Gustine