This is what id use as a base Dayle.
Mentality - 6
Creative freedom - Norm
passing style - mixed
closing down - Often
tackling - normal (hard maybe?)
forward runs - rarely
run with ball - rarely
long shots - rarely (unless they are good then mixed)
through balls - mixed
cross ball - mixed
cross from - mixed
cross aim - mixed
swap position - none
marking - zonal
tight marking - maybe
free role - no
hold up ball -
Id set both up same except have 1 on a
diff mentality by 2 notches. Id have 1 set to tackle hard if he's got the stats for it and maybe just maybe 1 of them hold the ball up. Unless you want quick breaks then this is pointless.
Have you ever used swap positions before? It might be worth testing it with the 2 AMC's. I've only used it ons trikers and wingers so unsure how it would work and how effective it would be. But the times I have used it, its added another dimension to me.