I have them all at 8 like you, and should have enough gear to get Rey, Finn and BB8 another level or two. I don't think the Vets will need more than G8, if Caspgaps earlier post is to be believed.
It's Rey's event, so you're safe in assuming she will need to be pretty beefy. I also assumed most people would be using their energy just to get the Smugglers, and therefore they wouldn't be super high gear level. Consequently I've tried to make the tiers they're used in a little less gear-intensive. As always, your mileage may vary.
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BB8 and the Vets at G9
The question in my mind is for the other three, and especially Rey. I sure hope 10 is the most needed for her.
Rey g11
bb8 g9
vets at 8
Gear 12 braniac
So I will give it a shot with that
Well...good luck in 5 months then?
https://www.youtube.com/watch?v=CTWViuk43S4&t=63s
So the key to beat Tier 7 is, gear up Kylo and throw a zeta on him. This will help save alot of resources.
This is a thread about the JTR event, not the BB-8 event, and the event is long over.
@Kyno perhaps you can just close this sucker down.