My next opponent plays 4-3N-2(AML/R)-1. All suggested counter formations I found deploy 3DC to counter the lone striker and a DML/DMR to mark the AMR/AML.

Problem is, I don't have those players (as I just recently started with the game).

I do have 3DC and also good DL/DR or mediocre ML/MR.

Should I
a) use DL/DR in a flat 5 defense row or
b) use DL/DR in DML/DMR positions (10% penalty?) or
c) use ML/MR in DML/DMR positions (10% penalty?) or
d) use ML/MR in their natural positions with down arows?

... and why? :-)