I'm going to have Tangrowth on my wifi team as a physical wall paired with Skarmory. He'll be mainly used for double powder (for my strategy) and also a Gyarados counter. Right now, I'm planning on going with Grass Knot, Shock Wave, and double powder. However, I'd really like to use Power Whip. Can he still counter Gyara effectively if I drop Leech Seed/Knock Off on the standard set for Stun Spore? Or should I just stick with the plan?