another friendly suggestion to u..
make ur units in the ratio of 3Armour:7Range (this is what most call the pro build)
u can see old thread abt pro builds.. also u can increase range of ur units by wining battles and gaining xp..
What is the best chaisis to use?
like 2 guys above me said it depends on ur own personal choice.. each build has their own advantage n disadvantage..
I suggest inf if u r learning and not planning 2 boost much coz u can get range quickly with inf without having 2 build cav/vech and heavy/tank structure...
the most important thing is what ur alliance decides to build..