I am going with the Malay. This malay stag below is a little over 9 months old and is close to 30 inches. I have seen several that make him look small. I have some of his sons crossed over a wheaton hen. I think they are going to be bigger then him. Unless you have some very good blood lines, most malay don't weigh over 12/13lbs.
Now that this thread is back I still would like to know what the excepted measuring posture is. It just seems there is so much room for variation depending on the position of the bird.