I've had good luck with prowheelbuilder.com go to their custom tab and you plug in your weight, cycling style and bike style and choose your wheels. Go with their "Recommended" rather than "Approved" spoke counts and use Shimano 105 hubs and you can save a bit of money. Velocity rims are well built for clydesdales. If you want to spend the $$$$$$, White Industries hubs are terrific! But they'll push a wheel build into the $750 range. With 105s you can be done for around $300.