I just got a 2008 DK Dayton complete BMX and wanted to start looking into upgrades to get it lighter/better in general. Any recommendations on where to get started? Here are the original specs: Features: Frame - 100% Chromoly with integrated headset Fork - 100% Chromoly 1 piece CNC steer Handlebar - DK 2 piece 7.3 inch 100% Chromoly Grips - DK Vice grips Stem - New DK front load design Headset - 1 1/8 inch FSA integrated 45 / 45 Detangler - SST ORYG with braided cable Brake Levers - Tektro FX3 Alloy Rear brake - Tektro 904 U Brake Cranks - DK Social 3 piece tubular 175mm BB - Spanish Pedals - DK Platform with pins Sprocket - DK Iron Cross lt. 33T CNC Alloy Freewheel - 12T Cassette Chain - KMC Z-510H Rear Rim - Alienation B.Sheep 36H Chrome Front Rim - Alienation 440 36H Black Hubs - DK Sealed 36H with cassette Spokes - 14G Black Seat - DK Jump seat with 8mm chromoly rails Seatpost - Chromoly micro adjust Tires - Kenda street design Accessories - DK Peg Bundy's - 2 piece More specifically, what part upgrade will make the biggest difference?