4* championing dilemma

I’m currently on day 431 and I just received a blue Nick Fury from daily, with my current Nick Fury at level 127 5/5/3.

I am also doing very well in EotS and looks like I will be receiving at least two X Force wolvie covers. The top 10 green will be useful for my 188 2/5/5 X force, but I will have another spare yellow.

I currently have 222,000 ISO and championing either characters will take over 300k.

Ideally of course I collect enough ISO before either covers expire and champion both (12 days to go for 400k ISO!) but that doesn’t seem likely.

Who should I champion? I know I’ll be having another Nick fury cover down the road from another daily, so I can add two levels to him, but I know I will be using X force more (I like to use him), but he likely will get only one.

Totally torn about this and I really appreciate suggestions and feedback.

Thanks!

Thanks for the suggestion. Will definitely champion Hulkbuster next.