Fruit trees for SW Colorado

Hello experts of the mountain west, I have a friend in Montrose Colorado (5900' elevation, zone 5b) who wants to grow food (yay).  They have a fairly open lot with irrigation water available.  They would like to grow fruit trees and shrubs but I don't know that part of the world very well.  Looking at local nurseries, the berry bush options are similar to my region (aronia, serviceberry, currants, choke cherries, elderberries) but they don't sell blueberries...  There isn't a tree listing for that nursery so I wonder what might grow there.  I'm assuming apples and pears but what about stone fruit?  Anyone have some insights for us?  Thanks!

The soil is probably too alkaline to even try blueberries there, that's true of a lot of dryland areas. Soil can be amended to a certain point but not if it's too alkaline to start out with. However, there should be plenty of other fruit options. Paonia is in the same region and has a number of orchards and vineyards. I've only been out there briefly though so hopefully someone with more direct experience will comment.