Hello Evolvedbullet,

What TW game are you playing? I don't know about M2:TW, but it is impossible in R:TW. The game does not allow units bigger then 240 men (excl. officers). The closest thing you could do is to mod all units to this size. For M:TW and S:TW the numbers may be different, but I am pretty sure a similar limitation will be in place.