If you are a member of Touring Plans you can actually see the view from the room that you may possibly want. They will send a fax for you 5 days before you arrive and you can add comments on a comment page. If you are that concerned about your room, you may want to join just for that service. Also, doing room requests at on-line check-in is much more detailed than it used to be on the WDW website.
By the way, we love Magnolia Terrace on the gazebo side. We were fortunate enough to have a room there once and absolutely loved the location. I really wanted to do a room request for the same type room that you wanted, but was overruled in favor of a Royal Guest room for our upcoming trip. We have requested Oak Manor, second floor, facing SW. I really hope you get your room request.