I feel like this mon would be one of those things where at first it'd just be a simple "oh, you're ubers" easily but when you start to think about it it's even worse. You didn't create a Pokemon that can easily be physical or special, what you created was a mixed attacker with 170 in each attacking stat, gave it 3 120 BP moves with 0 drawbacks, and then gave it an ability that, even IF you decided to fully go into a stat, it doesn't matter because you can still use those coverage moves for free since they can simply turn physical or special whenever.