What size bags to use on my Bd'd S10

before my 85 s10 was bodydropped, I had 2500's all the way around. I only did minor trimming to the front spring cups dor the 2500's in the front. Are the 2500's good enough to lift my truck now that the body is 3.5 inches closer to the ground? or should i get slam bags or some other type of bag for more lift and a better ride?