Does it really have to be carbon?
In general, the difference in weight between the various designs is usually not particularly large. Many people ask themselves what the exact differences are.
Carbon is primarily used to make the boards more resistant to the forces exerted during jumps and the associated landings. The sport is evolving incredibly quickly, presenting manufacturers with new challenges. If you don't want to jump high and are more interested in freeriding and downwind tours, then the carbon alternatives would also be ideal. For high jumps and hard landings, you should choose the carbon version.