brother I don't see a thing wrong with those back shots, the double bicep looks particularly great! I think while deadlifts, ect. are great for strenght and stimulating overall size, I never have seen many powerlifters who were also bodybuilders and did not fare well in the judges circle (at least not in the circle I judged in) because of thick obliques, and lower back muscles which imo can make symmetry suffer. We judged equally on symmetry, muscularity, and definition. One time I thought I was going to be jumped on by a 240 lb competor when I told him he needed to lose about 20 lbs of muscle that he had in the wrong places. I don't think he ever won a constest, his ego got in the way, bigger is not always better, class not mass. keep going you look great!