Best end game teams?

I recently got tornadus, hoopa, yvetal and zoroark... But I already have three pretty good teams. For end game what are my three best? I'm thinking:

1. Hoopa Zoroark Yvetal
2. tornadus Rayquaza Ho-oh
3. giritina Marshadow Blacephalon/arceus
4. heatran Groudon Arceus/blacephalon My current teams:
5. Rayquaza Giritina Hoopa
6. Groudon Heatran Ho-oh
7. marshadow Cobalion Verizion The current #3 fighting team will be first to be replaced but from there I'm not sure if I should keep my beast of a fire/Groudon team as #3 with ho-oh on it and find a sub for the flying team, or go with a ghost team (Marshadow, giritina, blacephalon). If I put ho-oh on my flying team would the fire team with blacephalon be better than the ghost team? I could also add thunderus or landorus on flying team. I know this is a first-world problem but any thoughts and advice is appreciated