Suggestions for R4 options

shield311

I'm a bit confused on my options to r4, after the poolie event ends, I will be paragon and need to decide what 6stars to r4, scorpion is r4 ascended and herc is r2, also I will claim the final selector and pick kitty, so she is also atleast r3 awakened here, so pls throw some light on which 2 champs to r4 for paragon.

Im currently at 8.2.5 and need champs to BGs and future content past 8.2 and outside story, also I want to limit herc to r3 FOR NOW, and want wanna r4 any other 2 options so pls help-

Nemesis_17

Cgr & doom

WinterFields

For BG, AA and CGR are great options for attack and Red Skull for defense