As a Newbie you should stay in the background and use your two AC/2 from a long distance. Later on when the battle is getting hotter you can try some close combat with the 4 Mls and 2 MGs. Don't stand still and hide if there are to many opponents or your heatlevel is to high. Good luck
Well, here are my thoughts on your build Pros -Good weapons for brawling 4ml=AC20 -Low heat gen while sniping -good armor Cons -Odd engine size/not common engine -No MG ammo -Low leg armor -useless CASE in the side torso. My take on your build comes to this, Common engine, more armor, and MG ammo to boot. I won't give you a rating, at least until you fix the OP with some MG ammo.