for a ten year old thats not the best attidude about park. Even If you dont like park its good to go in everyonce and awhile. If your comfortable in the park you can have a ton more fun skiing all mt. Personaly, i find stomping a 5 outside the park is much more rewarding than doin one in the park, meaning i like all mt more, but if i never went in the park then i never would have learned 5s. also 1s and switch riding are a ton of fun all mt but confidence from the park helps.
I would say rossi scratches are a great ski for you, they perform really well all mountain. Id either get the bc or the fs depending on what your going to be skiing. Also at 165 you could probly go into adult models.