Roman Legion composition?

[Knight of Heaven]

Realy well historicaly , i was thinking a polybian will be 5 hastati 5 princepes, 2 velites, 2 equites and 3 triari and the rest alies and auxiliares, this will be a full legion , on post marian units in each legion will be 10 cohorts with 1cohorth inc. , and the rest is auxiliares , inc.aleie cav wel at leats is what i read in the books :P well i try folowing this formation