What Colt said... it's in config.cfg. While on my local in-house development server, 90 worked fine, seems it wasn't enough on the Vert server. 120 is working great.
To create a custom default loadout for all players, in your init.sqf, add these lines above "//Load in compiled functions":
DefaultMagazines = ["ItemBandage","ItemMorphine","ItemPainkiller","FoodCanBakedBeans","ItemWaterbottle","8Rnd_9x18_Makarov","8Rnd_9x18_Makarov","8Rnd_9x18_Makarov"];
DefaultWeapons = ["ItemToolbox","ItemMap","Makarov"];
DefaultBackpack = "";
DefaultBackpackWeapon = "";
That's my servers's start loadout. Adjust as needed.