Arizona, ah nice and dry. I'm from Idaho a dry heat, not so much on del Norte. LOL I wasn't expecting and don't see it mentioned here, the humidity. Boy howdy, it got me good. Everything was always moist. I had to constantly wipe my hands because they would get really sweaty holding my poles. Just a heads up for you. It's going to be humid.
I started July 5, 2019 from Irun. I don't speak Spanish and I found some not so friendly locals if I didn't. At times, it was very polarizing. I've walked the Frances 2.5 times and it was so different there, more forgiving and helpful hosts, pilgrims, locals to help me communicate. Just have google translate available in situations where it seems difficult.
Foot wear, I wore Coleman country walkers. They were excellent for the constant inclines and declines. Into the mountains, out to the sea, some muddy trails and yes, hard surfaces but oh so beautiful.
Remember, getting there is the hardest part and you're almost there. You'll love it. Buen Camino!