The reason for the range on the higher end hubs is they come in 24 hole, 28 hole and 32 hole drilling (the Alex rim does not). I would put you on 24 hole on the front and either 28 or 32 in the back. IMPORTANT: the DT hubs do not come with skewers. You probably have your own to use from your other wheels. The weight on those hubs are given w/ out skewers too - which means they are probably real close to the ultegra hub weight.