Which 5 stars to prioritize

Six_ArmedGin

As you can tell from title but which 5 stars should I be leveling up and prioritize for act 5 and far future act 6? Any suggestions of which are good or bad and who needs awakening help too.
No 6 stars and r5 A Ultron, r4 A Joe fixit, r4 A Ironman, r4 A Dormammu.

DNA3000

Archangel and Doom. Then probably Ultron and Havok.

Doom doesn't need to be awakened but he's better awakened. AA really needs to be awakened to unlock his full potential, but he can still be pretty useful unawakened at your level.

BeastDad

AA, doom, ultron

Six_ArmedGin

And a 5 star Peni, just pulled her