

So I already know which champs to eventually take up to r4 just want to know which to prioritize first. (Focus being Battlegrounds)
CGR and Warlock will go up first, but aside from them, i’m planning to r4 Valkyrie, iDoom, iBom, and defenders: Thing, Korg, Domino, and Mephisto.
I have 8 generics so awakenings isn’t an issue , sigs are , which is also why I didn’t include Nick Fury in the list above , as outside of the fact I only run 1 in deep wounds, he’s only sig 20 and I’ll be focusing on sigging Attuma and Valkyrie before him as they benefit more. At low sig, he doesn’t stall as effectively, also certain champs like Hulkling, Peni, and Dani won’t even care about a high sig NF and can blitz him down fast.
Also I didn’t include torch/AA as i prefer to keep them r3 for less likelihood of getting banned as they’re mainstays i use a lot , especially since my science roster isnt as strong. (Didn’t include Hulk since the 7* exists)
Should I save the defenders for the very end? Does iDoom benefit a lot from the r4 or can he wait? And same with iBom? 
Current r4s and 7 stars for reference:
