Weight is seriously overrated as a concern. If the parts are good (and your parts are good), who cares? Frankly, I'd just ride the bike and enjoy. If you're dead set on doing this, you could think about different wheels. The mavic a719s are great bombproof rims. You could look around for a lighter wheelset which would be the obvious place to lose some weight on your bike. That also could be a really bad idea depending on how much you weigh and the kind of riding you do.