I figured squats would stress your shoulder too much, guess not. I have a minor rotator cuff issue and they bother me a little, but if you can do all the above then yes I do believe they will grow significantly, genetics aside, and you will probably keep majority upper body size and strength bc of the gear's anabolic and anti-catabolic properties. But you might be playing catchup with your upper body after this one
I wouldn't do a full blown leg workout as if you were only them once a week, bc as marcus said it probably will feel like you are overtraining and you might..... and you might walk around like your developing polio. haha