Ok, first of bro, toss out the Flex magazines. The training and diet info is bullshit. Please don't imply that you train harder than some of us bro, I've passed out a couple times right after a set. There are alot of guys, and gals, on this forum that 99% of the people who workout religously couldn't keep up with. Take a full minute rest between weighed dips or 500 ibs squats? You're out of shape if the answer is yes.
Second, aesthetics, once bodyfat is low, is basicly genetic. Your training might affect the proportions of one muscle group to another due to a training imbalance, but shape is genetic.
Third, stop bulking and get your ass on a diet. If your 17% you shouldn't be bulking, if you plan on being a bodybuilder. There is no excuss for eating that bad. When we bulk up like that, we are kidding ourselves and showing lack of discipline by thinking we are actually gaining muscle faster. Show the same level of discipline at the table that you have in the weight room. Not everyone can be a bodybuilder both in the gym as well as outside of the gym.
Fourth, how much you lift is important. Playing with light weights will not produce the quality or density that you are seeking. The guys who usually use the line "I don't care how much I lift, I just care what I look like" usually look like shit are in total denial. While I only care about how I look, not what I lift, I understanding that training heavy will affect how I look.
That being said, welcome to the training board bro. This is where the truely hardcore on the board converse. Stick around and learn.