I would use some variations of 3-2-2-2-1, I'll post them below, any of them should work, the only difference is where you will focus your attack:

--------ST--------------------ST----------------------ST--------
AML----------AMR--------AMC---AMC---------AML------------AMR
----MC----MC------------MC-----MC--------------MC-----MC-----
DML----------DMR--------DMC---DMC-------------DMC----DMC----
----DC-DC-DC----------DL----DC-----DR-------DL------DC------DR

Personally I'd go with the second or third one, I'm more comfortable putting blue arrows on DMCs, red on your AMs.