U might want to look at the Jamis Parker 3. but its a full bike, and im not sure how heavy it is. but it looks like a really good slopestyle bike.
don't recomend it at all my friend snapped his rear drop outs clean after 2 months of pretty hard riding. snapped going off the lip of a jump and his tire fell off sending him over the bars. It also bent the frame. reign x is a good recomendation but alot of those other bikes are sick to.