I agree with getting bloodwork, if test is low, than trt is probably all you need for now. I'd give myself at least a year of getting back to lifting, as our bodies take much longer to get back use to it! If you been 7% bf before, you know how to diet. Take it slow, build a good base, try to stay injury free, get your bf down naturally, then maybe consider a cycle down the road. Good luck bro!