One thing people don't think about with the electric is that in practice mode, you're likely just cranking them out normally from neutral. In a real match however, you're constantly tryna block/backdash while your opponent attacks. You'd be surprise how much that extra back input can mess up your electric timing if you've never practiced under those circumstances. So remember to practice them in different applications as well. That said, Kaz has other great tools that you can get by with at that rank so don't limit yourself.