Sure, so the thing with tires is that there is practically no connection between trail difficulty and tire needs. I can do Elephant Hill or Fins and Things all day long on P metric. By contrast, I can destroy them easily on visually unremarkable AZ trails. And I mean punctures that will be hard to repair if you bust two tires.
I don't have or need any breathers. You NEVER want to be in the desert alone right before or right after any rain and never in tight canyons, alone or other wise.
You will definitely want the Charlie Wells 4x4 books (Amazon). The newest editions only. These are the best overall guides. A 4R can do with no issues any trail with an SUV on it, which includes half or so of the difficult trails. With no prior experience, blue/moderate trails should be fun enough. They are a breeze for the vehicle but some will feel like an adventure to a less experienced driver.
Guide to Arizona Backroads & 4-Wheel-Drive Trails 3rd Edition: Charles A. Wells, Matt Peterson, Susan Hindman: 9781934838280: Amazon.com: Books
Slow speed rock crawling with quality suspension like yours and aired down LT tires is very comfortable.
If you want to have peace of mind, get a proven tire though.
At the very least, you will want 5 tires and not just 4 plus the stock spare and you will also want a tire repair kit on top of that. Some of the most scenic AZ desert trails, plenty easy as terrain, are brutal on tires (same desert as Baja).
Let me know if you need more detailed info on specific trails in AZ or S. Utah once in the area.
EDIT: oh, wow, Total Chaos LCA? Fox 2.5 DSC and Total Chaos LCA with P metric tires will be a bit of an oxymoron. Maybe you can convince your local tire shop to let you drive LT for 100 miles to see how you like them.