Welcome to my journal Farmer. I appreciate you taking the time to go through this whole journal. I'm a big fan of old school and land race genetics. I agree that the keeper blueberry will be found with Dutch Passion. The one I just finished is very nice, it has excellent taste and effect. If it was named something else other than blueberry it would be a keeper. It isn't blueberry tasting but it is very fruity and has a good punch. I went with Mr. Nice Black Widow because that is the original White Widow and I wanted regular seeds. I don't think GHS does regular seeds anymore.
@Graytail has some slick methods for containing the wild ones, I would suggest following him too. He will flower the wild ones in a small pot like a 3 gallon and after the stretch is done he'll transplant into a larger container until it finishes. This limits the plant size then gives it plenty of soil to go the distance in without out growing the space.
Welcome to high brix growing and I'll help anyway I can.