richmanbarbeque, I dont think the only problem you will have with a cocktail tree is keeping it pruned. We have a cocktail tree that we planted about 8 years ago. It has grown up just fine and bloomed out perfectly. The problem is that the tree blooms waaay too early. It must be a tree from further south that does not have the cold temps that we have here in Tennessee. Ours blooms in February or early march. And I'm sure you know, we always have a cold freeze after that. Last year was the first year that it actually produced fruit.
I dont know all the ins-and-outs to this stuff and breeds of trees and stuff like that, just thought I would throw that out there to give you kind of a heads up from my experience with them. I hope yours does better and blooms later than ours, but good luck!