>>47622520I love Meganium, but it's equally shit in both. Speaking from experience. Just play gen 2 because it's better than HGSS.
If you play Crystal on VC you'll have access to both the Odd Egg and the GS Ball for Celebi. That would be my suggestion. As for the rest of your team, it's kind of hard to plan when the only one currently on the team is Meganium. But you should use Quagsire because it's cool