10, 202, 10 to Casa Grande. To avoid PH 10, 85, 8 to Casa Grande is another good route. Quartzsite is a good stopover but with 5,000 RVs parked everywhere in Jan you'll need reservations or park on BLM land, no clue about motels if you are not using a RV.
I'm not sure if your concern is the route or free CG's. Depending upon when you head N/S you may want 50A electric for the ACs in the southern areas. There are many routes available as you head N/S. Make reservations as needed. Be aware that with Covid travel restrictions many have purchased a RV and reservations are more limited.
