Beautiful little tree! Good luck and please keep us posted.
I'm trying the same here in So FL. Growing it above ground in root saver pots, and will let it grow into the ground. My biggest worry is the limestone soil here, so want to elevate it as much as possible. As it hasn't grown through the pot bottom yet, considering digging a hole as deep and wide as possible and amending the soil.
How cold does it get in your location? Mine handled temps in the high 30's without noticeable stress. Starting with a more established tree should give you a better shot at success.