Howdy neighbor, I’m in Chandler. I’d be very careful of doing a complete drain at this time of year because of the temperature and sun we have now. The plaster in that pool being exposed to the elements with no water, can lead to some cracking. Not saying it will, but it can happen. There are other ways to do a water exchange without having to drain the pool, the tarp method comes to mind. (Maybe one of the mods can post a link)
Normally you do the drain/refill between Dec and Feb when it’s much cooler and the sun angle is down.
If we get lucky and have a cloudy day or two in the next few weeks, you could possibly do the drain/refill during that time, provided you have the proper equipment to do it quickly.
You can always consult with some local professional pool companies to get a few opinions
~Rob