If the weight is a huge concern, I am sure that bike people will come up with aftermarket alternatives. Brompton has an entire industry around it to shave weight off that hefty folder. Someone will market carbon seatposts and other pretty bits to get the weight down a pound or two. At the price on kickstarter I'm guessing the rims are not the lightest ones out there, either, or the brakes. It's all about the frame, and component swapping is half the fun. My BF was 22 lbs and I've swapped stuff and dropped 3 lbs; granted I went from steel to titanium and ya'll will be going from titanium to carbon. Get the bikes, ride 'em, then tweak 'em and post back all the goodness!