Dude, a tip of suggestion. When you freeze your opponent, it scales the first attack. When you do a B3 after a combo its damage is greatly scaled.
Sick combo.
Once you freeze your opponent, can you try landing a J3, and then do a B232 or 122 cancelled into Wall or Big Freeze, or Iceshot without MB? I have a hunch that it might rise the damage to the max.