I've just arrived in Cerulean City in LeafGreen. I'm not planning to challenge Misty until my Magikarp evolves and raise the rest of my Pokemon to level 20. I'm training on the route before Cerulean City. Route 4 is what I think it is called; it's the route at which you can get Ekans or Sandshrew, dependign on your version. My team is Magikarp Lv. 16, Spearow Lv. 15, Butterfree Lv. 15, Pikachu Lv. 16, Nidorino Lv. 17, and Ivysaur lv. 18. I was thinking of changing my team though.