All King form of Starter Dragons should be enough to handle the dungeon. Use your most stronger subs appropriate to them and you'll cleared it easily. If you don't have Diamond Dragon Fruit to evolve your starter dragons, use any of your strongest leader. Even the most crappy 5* collab of pantheons should be able to handle that old dungeon very well. The Green Dragon Fruit (IIRC) has 800k or so defense so you need at least one team member that can output more than 800k in a single damage to defeat it. Without looking at your monster box, it's hard to tell what you should use as leader or subs.