Echoing what other people have said, you must work in a shop. If you're going to ride on the street, Open Pros are a really bad idea. While they're light, round rims, they have a very small profile not ideal for riding on *****ty streets. Get CXP33s if you want a bombproof rim. As far as hubs, I think the Pro Maxes are sealed, so for maximum length between hub overhauls, sealed is the way to go.