in both formations you mentioned 4-5-1 v style and hexagon you don't have AMC position...i want to remember you that your opponent have weak central defense area (just 1dc)....i have no doubt that he has super attacking formation from front (4 midfielders and 3 strikers) its like 3n-4-3 but he has 3w from back and this weakness you must take it and not miss it..your amc will do the different..you can also put red arrow to one of your strikers...in v style 4-5-1 your wingers i guess will be blocked from his dl and dr and in other hand you will not have central midfielder to give your strikers the balls from his weak area defense..its your choice man...its just my plan playing if i were you