What I like to do is a powerlifting type squat where you do 5-6 warm up sets of 8 - 6 reps increasing the weight every time to prepare for the heavy lifts and then 3 - 4 heavy sets of 2 -4 reps ad leg extensions or hack squats to this 4 sets of 10 - 15 . Do this once a week . Makes my quads explode into growth. Personally I think that you have too many exercises and not enough rest time in your current leg workout , would work fine for deffinition but not growth.
Attached a pic just to show it's not all thumbsuck.