I want to build my strongest possible team

[ebon furnace]

Here is my full box including Ssrs I will upgrade any of them that go on the team

[stable seal]

I would highly recommend you stop selling your SSRs as you are shooting yourself in the foot like this.

With what you are showing I cant really see a functional tema, so id recommend sticking to the Z-fighters for now and farming stones so you can summon on the anniversary.