Act 5

I've completed act 4 and was thinking of starting act 5. I'm 4000 shards away from my another 5*. Can do eq on masters with some revive potions(3or4). Having trouble with new SmackDown master event. Should I explore act4 or go for uncollected. Any help would be greatly appreciated. Here's my roster
0
Comments
Just wait for good champs at rank 5
Or 5star at rank 3.
Otherwise it would be very difficult.
But anyways try progressing in act 5.