Use the leftovers, they will be useful. However, change some moves too. Change toxic to acid armor, so your horrible defense stat can be boosted pretty well. You have 3 ice type attacks, so take out ice shard and replace it with recover, either use Ice Beam or Freeze Dry, it's your choice. Put Flash Cannon in there for the last move, and change the EVs around a little bit. Here's the finished product:
Cryogonal@Lefties
Trait: Levitate
Modest Nature
EVs: 84 HP, 252 SpA, 172 SpD
Moves:
Acid Armor
Recover
Ice Beam/Freeze Dry
Flash Cannon
Hope I helped!