Working out the details of a shorter leg of a MUCH longer trip... Oklahoma city to Tucson

If I drive Oklahoma City (stopping for the night in Albuquerque NM) and then on to Tucson AZ it would be 2 very long 8 hour days of driving, and since I'm the only driver I'd prefer not to push that.

I'm wondering what interesting locations you would recommend stopping, if I end up split it into 3 days of driving.

I was looking at spending the first night somewhere beyond Amarillo closer to Albuquerque (Unless there is something compelling to stop at before then) and then the 2nd night somewhere in Southern NM (maybe near one of the NP).

Any suggestions for National Parks (Santa Fe National Historic Trail or Petroglyphs) or other cool places to stop would be appreciated.

Thanks!
-Andrea