I would use blue arrow on DMC (to help cover the hole in the middle of the backline) , red arrows on the ML & MR (to give you psuedo AML & AMR) . No other arrows or need for them. Might be a little weak on possession with only 2 players at midfield but should be a good formation for hard defending plus counterattack. (That is, if formations and tactics mean anything at all in this game)