That sounds like a good plan. However, it seems to me that the even the smaller wings would cost me about what my Oceanic Chute II did. I do agree with Omar and Roakey that the back plate and wings are not the best suited to a single tank system. You have to keep bolting and unbolting stuff just to make it fit right. I would hate to have my weekend of diving miffed just because I lost a wingnut or something trying to switch things over. Might want to reserve your purchase of the back plate and wings when you are going to be using those double tanks that will really benefit from it. Heck, if you're gonna spend the same amount of money anyway, it would probably be better to have two complete units. As Omar put it, why use something less than optimal (ei something not designed for single tanks) when there are dedicated units out there that were designed just for single tanks. Just something to ponder on. Wings don't make the diver... skills make the diver!