Howdy,
Nothing wrong with a 97 for CAS. Lot's of folks have good luck with them. A couple of points for ya..
Trap has little in common with CAS shotgunning. If you want to shoot clays, have fun and enjoy, but don't expect much in the way of cross-over, except for shucking the pump. Also, the way you shoulder a shotgun for wingshooting is very different than for shooting the CAS target on the ground.
I have never held a new Chinese 97 that was not rough and sticky. They almost always need some tuning to get workable and that eats up any price difference between the original and the replica.
Have fun with your new scattergun. Adios,