Don't judge on shipping weight. I shipped a single spinergy and I think it was 6lbs shipping for an 860 gram wheel.

That said, it still is a really heavy rim at 650 grams.

Velocity rim weights can be found on the left here here: http://www.velocityusa.com/default.asp?contentID=580

For other components, this is a good weight list if you can't find if from the mfgr http://weightweenies.starbike.com/listings.php

If you have a $400 budget I personally would recommend going to your favorite LBS and see what they could build for you in that price range and suit your needs.