You'll want to put most your focus into your 5*s going forward as you can't take 4s into act 6. So BWCV would be my top priority followed by havok. But if you're just going through the rest of act 5 then getting through the collector is really the toughest part. Awakening gem id probably use on domino. Or omega red if you have enough sig stones for him. He needs to be really high on sig levels.
Why won't you be able to hit 1Million on acorns? If you've just become Uncollected, you can still def fully Explore Uncollected EQ Chapter 1 with that roster + Master and the previous 2 difficulties. You can also attempt Master just 1 Day to see how hard it is for the daily Acorn Mission. I'm sure you can hit 1 Million Acorns.But, I'd agree with Plinko. You must be blessed to have gotten Havok and Black Widow CW (and Magik also) as your first few 5 Stars. Def focus on Ranking those 2 up to Rank 4 at least, but probably Havok to Rank 3 as well. As for 4 Stars to awaken, don't see any good available Mystics to use it on. And if the one you're getting next is a generic then...I'd pick Omega Red personally since you don't seem to have Massacre and/or Red Hulk for the Flaming trinity that just turns Domino insane.
Dude u have corvus and prixima how are thay not both maxed already?!?