Good team in pokemon leaf green? any suggestions?

That's good. Maybe you could add some rock/ground type, such as Diglett or Ryhorn. You are going to evolve all of these to their final form, right? Maybe you should get a Dratini while you're at it. Or a Chancey, they're good. Scythers are also good. You could also try for an Eeveelution or Snorlax. Just some suggestions