Recently built a 45x65 shop in north phoenix. A couple more things to think about. There are times of the year like Sept-October and April-May where an evaporative cooler blowing in the area your working works better than running your AC. I bought a 36 inch port a cool and wheel it around the shop. These work best when you can place them outside and blow your air inside. A man door works good for this.
Make sure you run Cat 6 from wherever your internet connection is to your shop. I use more wifi in my shop than I do compressed air. Cameras, garage door openers, TV's, Stereo's all use Wifi now.
Something to think about on the 50 amp RV outlets. I have one in my garage along with my fifth wheel but in reality I don't need it there as I won't run my AC in my RV inside my garage. I have AC in my garage for that or my evaporative cooler. All I really need is a 20 amp for keeping the batteries topped off and when I want to run the fridge in the fifth wheel.
My biggest regret is I had an offer for a free urinal from a friend and I didn't install it in the garage area. I have a full bathroom upstairs in my living area and every time I need to piss I have to go up stairs.
Otherwise I absolutely love my shop and next to my funco its my favorite possession.