if you don't have danzo just wait for ay if you have danzo bt him only if you have a solid team for him

Training pots don't worth it at all, recruiting a ninja will give u more power than 200 pots.
Wouldn't recruit Gengetsu either, as he's in seal treasure, redeemable for ninja points and also drops frequently from infinite illusion packs. In time you'll have him 5 star.

Danzo is a solid choise, and who knows, maybe we'll get same firework again next month, like we did last time?.. and then you could BT him. But if not, the power from recruiting either of those ninjas is nice.

Ay is also good, but collector stuff I guess his scaling is not great. My choice is also Danzo. I'd consider pots only if I have all the ninjas and don't need more frags for bt

If you aren't feeling like opening them right away, i say keep the packs. And look out for the next Fireworks prize. If same packs are to come with next fireworks, then you can go for Ay Kimono. I'm just keeping the packs. Danzo Izanagi is a nuke type but only if you have the superior power.

This. Always keep the packs if you cant recruit the ninja right away. Otherwise you can run into a situation when this ninja is free (80 frags) and you already have 40