1. POS components and fork
2. dont ever ride a nice bike in sand, ever
3. disc add on for frame is a joke at best, swap forks for disc mounts up front, but v-brake rear is fine for anything you would be doing
4. pass on this bike

there are many many better deals to be found than this bike
there isnt any reason to get a bike this new if you arent going disc, look for late 90's high end bikes in the same price range with far better components