Agreed, welcome to the single-stack mag pouch club. I am bulky enough as-is, so the less sticking out the better. Ive managed to load a ton of gear onto my kit (though I mostly do two-day MilSims so its all necessary), but I keep it as low profile as possible at the same time. Good choice of holster too 😉
Also, why the medic bag? Another thing I carry at MilSims, but for normal weekend play its just added bulk and possibly get in the way since youre right handed. Id personally go triple single AR pouch on the front, pistol mags left hip (or a little more forward depending on preference) on the belt, and if you think you need more than 4 mags on the field at a time then maybe another 2 singles on the left front of your vest where your double is now. Prone will be more comfortable, less snagging on doorways, and itll balance a bit better.