Picked up a LitePro seat post to replace the very heavy Biologic one with the pump inside (anyone want one?) and that has made a big difference in weight. The bike is still too heavy for me to carry it for very long, but replacing the marathon racers with lighter weight tires in the near future will help. I put together my "single speed flat kit" which is basically a 15mm and 2 10mm stubby wrenches + 20" tube; it will live on the bike in a tiny handlebar bag. My patches and tire levers, etc., are in my sling bag I wear along with my Pakit tube. Having just been out in the rain, I have to say the coaster brake is pretty awesome!!! No screeching when it rains, it stays dry, and stops just like always. Less crap to clean off the bike, too, since it rides higher from the ground than my Pakit. The Mu will definitely be my bad weather bike =).