I am not sure what your 30/40/30 stand for for which. I personally do a
40% protein 25% fat 35% carbs being I am a little more carb sensitive for my body type. With my protein its mostly lean meats and a lil with shakes, my carbs are all good carbs, my fats are very low in saturated fats, high in mono/polys.
Anyway gauge what works for you, some people can take in a lil more carbs, i find for myself sticking on the tad higher protein side gives me what i need to gain lil muscle but still have fat loss.