Packer Backer,
I have read this thread. It gives me better understanding now when we communicate. I applaud your approach and am impressed with your approach. You have an excellent plan and it is a marathon - not a sprint. I believe you understand that.
We will get you some BH chestnuts shipped soon to you. It is my belief that the regular Chinese Chestnut is tougher than the Dunstan. My beliefs don't matter - you are in the experiment on going. I will cross my fingers and hope you get 20 to 30 % survivability on chestnuts you plant in your borderline environment. :)