Most entry level wheel sets will handle your weight fine, as you go up in wheels and the spoke count goes down, weight might become an issue. You can find lots of entry level bikes with various carbon parts (forks, seat posts, chain stays,etc) and carbon does soften the ride a bit, IMO. Nothing wrong with a good alumnium bike though, and don't get caught up in the components game. You don't need Dura-Ace or Ultegra parts for a good bike.