With that location and the height of your stand, I would say you'll get one lung. This may not be a fatal hit. Arguments and first hand accounts both ways. Either way, this deer is going to bed up due to the injury. Therefore, I would basically stalk the bloodtrail as slow as possible. Keep scanning ahead and to the side. Only move when you know the deer is not in sight. May take the rest of the afternoon to get very far, but you may get a second shot. Good luck!