What team should I do with this?

We don'thave IVs, but Buff bot Azura + Eirika +GronnBlade fury glimmer Nino is real good, and then slap Alm because of Falchion, or B!Lyn of you want to run some sort of brave bow, ss desperation set, or even base kit

L!Ike, Azura, Nino, B!Lyn.
If you get a green like Hector, Dorcas, Grima, swap out Nino for them

I would use Eirika, Azura/Ninian, Nino, and Brave Lyn.

Either Azura or Ninian would work - that's pretty much up to you. Azura might be better though because I think she gives more buffs.

However, I recommend swapping Alm for Eirika because Eirika can give buffs to Nino. That will make Nino stronger, and let her destroy enemy teams.