Replying to Park ski weight

was wondering what your guys' thoughts were on a good park ski setup weight. right now i have the filthy riches with marker griffons and all together both skis weigh about 15 pounds. i was thinking about buying the on3p cartels with rossignol fks 140s and i did the math and its 1round 13.3 pounds. are these good weights for a person who skis lots of rails. Ik there not the lightest set up because they are a wider ski but what is a good range for weight?