about to drop again just have some ?s

k i have a 4 inch block kit on the back and cranked torsions up front, but i want to go about 3 inches lower so im gonna get control arms and pull the middle leafs, just wanderin if i will run into any probs, like clearnce of my tires, im have escalades with a 40 series tire on them, just tell me anything i should watch out for, thanks guys