Nut trees for Dry Alkaline conditions?

I already have a mature pecan tree in the front and a young one in the back. I've been focusing on getting fruit trees planted, but more and more as I think about how I want to use the open space remaining I come back to wanting another nut variety.  I'd really like to have chestnuts, but everything I can find about them suggests our PH would be a death sentence. I've almost got the correct conditions for almonds, but they nearly always flower before our last freeze, and I don't want to be throwing blankets over full sized trees every year. I need something that is comfortable with 600 - 700 chill hours.  

I've thought about growing pistachios, but haven't been able to find a source. I think they're a victim of being confused with the ornamental Chinese Pistachio. It would be really cool if the ornamental variety were edible, as I could pretty much find one anywhere. I'd be delighted if someone could point me at a source for both male and female pistachios. Are there any other options for these conditions? I do still have appropriate places to plant both a male and a female tree.

Maybe I was looking at the wrong time of year. There is now a matched pair of pistachios on Amazon for 150$. That's outside my budget, but may be a sign that they are becoming more available.

Now I'm feeling a little silly, just doing a search on permies gets me a lot of information on growing pistachio from seed. At 75 to 80 dollars a tree, I think it's worth the effort to grow my own. The seeds are much more available than the trees, so I'll be ordering some seeds, probably after the holidays.

Alright, I have no patience. Took me five minutes to give in and order seeds today.