Here is the rundown in my mind:
Grunt:
AI Weapon:2
Armor:3
Transportation:2 (minimum)
Total:7
MAX:
AI weapon, Armor, and transportation:2 at least, 3 at most
It seems like the wisest move would be to get a MAX cert, rise in ranks alittle, then unlearn it and get your grunt gear. Hoofin it in agile armor and a cycler at BR1 sucks when your fellow BR1 comrade is sprinting by you in his heavily armored combat machine
But, hey, I don't really care, I am an infiltrator.