Congrats w/ your new bike! I just helped a friend of mine buy an XTC SE-2. It's got some nice parts on it (maybe the same as your bike??) and weighs in at 25lbs..not bad for how much she paid for it. Stick w/ your V's for now...cost of upgrading shouldn't be that bad cuz i assume your components are similar to the XTC SE-2 meaning you have disc tabs on the frame and your wheel set already has disc hubs on them. Move to a disc if you feel it's necessary. I would consider it myself, buy that would mean giving up my CrossMax wheels for that and probably adding more weight to my bike (v's are the still lightest it believe). Get out there and RIDE!!!!!!