Terry -
Unfortunately I'll be in China for most of late July, so no chance to head up to N AZ as you head through.
If I could make one suggestion though... You might want to consider a stop in Flagstaff instead of Kingman. It's about 90 minutes further, but higher altitude and you'll get out of the heat. Kingman in late July can easily be 105+ but Flagstaff will be below 90... You start to climb up into the mountains about 30 miles or so east of Kingman...
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