How strong are your opponent's MC and AMC in comparison with your MCs? Since your opponent has a central line of DMC-MC-AMC, and has only 3 DCs, he would focus attacking on the middle and be exposed to counterattack on his flanks. If his AMC and MC are at the same levels with your MCs, then I think 4-2MC-3W(AM)-1 with focus on both sides and counterattack would be a good choice. An alternative choice is 4-5-1V if you need more backup against his AMC.