Be careful mounting rear tires onto the front. The front tire is designed to optimize countersteering forces so the bike manuevers better. I think as long as a tire is sufficiently round though, it should work to steer the bike but a rear's profile might deaden your cornering response. I'd pay close attention to the tire's center crown profile. The Metzeler is fairly pitched in the center to provide very quick steering with little countersteer. You will want a rear tire with similar profile. These are more common in the sport tire realm.
Far as OEM fitment size goes, the Metzeler is a pretty good choice as its rubber is somewhat sticky and it's V rated while the other choices are H rated.