Whom to ascend + awaken?

Hi guys, I just got these rewards and I want to know on whom to use it. Also I have some amount of tier 2 dust for ascending too. I have a couple of R4s and R3s. Lemme know whom to use it on.

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Rank 4:
America Chavez
Hulkling
Nick Fury
Scorpion
Titania
Venom
Rank 3:
Abomination (Immortal) (Awakened)
Archangel
Gamora
Iceman
Magneto (Red)
Storm
Valkyrie (Awakened)
Rank 2:
Bullseye (Awakened)
Corvus Glaive
Dazzler
Emma Frost
Ghost
Gladiator
Hulk
Human Torch
Professor X