Best formation against 4-2DMC-2W-2 ???

Hello guys, since you have given me awesome advice so far I need to ask again

the opponent plays with this unusual formation Attachment 10848. It is a cup match and it the first round we went 1:1 and my team is a bit better than his. In the away leg obviously I will be looking for a win but how do you see it happening? I have two strong midfielders and good AML/-R. Should I decide to play through the middle or to use the flanks? I am really confused.

In the first game I played with 3N-3N-2W(AMR/-L)-2 and lacked possesion which was strange. I know that this formation is not the best possible but I don`t have much options to rotate my squad at the moment but I would appreciate any suggestions.

Thank you in advance! :)