Thank you for your fast response and your opinion as well.

Actually I am thinking about using your setup due to the mentioned details, plus it look coherent and effective. The only one problem would be the lack of good MR and ML so the original 4231 would give more benefits due to quaility players on those roles.

It might be possible to use your setup with AML and AMR while trying to move them as back as possible.

Anyway, I would give it a go because as you just mentioned, there is nothing to lose from this situation and at least I can test, how effective would be another setup against a stronger opponent.

I do appreciate your kindness, wish you a great day.