Definitely a cool team. I enjoy using Beartic a lot. Don't you think Superpower is counter-intuitive to the whole idea behind a weather team? With weather teams you want to stay in and do as much damage as possible. Assuming you don't get a SD boost beforehand, you'll knock yourself down to -1 Atk, forcing you to switch unless you want weakened attacks. If you do get a SD boost then you use Superpower then you're just throwing your boost away. Common rocks and steels which you would be hitting all get the same damage from Low Kick and Superpower. A quick calc on a 252 HP/0 Def Regirock (I've been seeing a ton of these as opposed to a fully defensive one)
Looking at the above calc then seeing the stat drops that SP gives, it seems like Low Kick is the better choice. I'm not really sure what other pokes you'd want to hit. I would think that with SR up, Icicle Crash/Low Kick would be enough to kill lighter pokes like Absol n such. If it doesn't OHKO, then it definitely brings in the range for Aqua Jet.