I own a ka m4 gbb and only have one mag for it and my sidearm(kwa mkii ptp) and will be buying more. How many do you think I will need? M4 holds 50, but I like to put in 30 for realism, and the pistol holds 17ish I believe. I am real trigger happy too BTW. I am holding everything in a plate carrier so that's what I have to work with. Thanks.