Dayum Chaps 34 inch quads that's bigger than some pro's. I can almost say with one hundred percent certainly that your genetically gifted in the quad department. Biggest my quads have been were 28 four years ago (6ft3). they are now 27 now and I'm leaner now then than. I Dc as well; although won't right now due to an elbow injury.
Do you do Dc calves one leg at a time? That would be torture because it is many times intensely painful when I do Dc calves any of my exercises. (explode to big toe , 5 seconds negative stretch for 15 and repeat)
Yes DC calf raises. Because of my powerlifting background I naturally like training explosively on the concentric but i make sure to slow it down sometimes really slow on the eccentric. Calfs i'm SUPER anal about slower, full range of motion reps. And ya i think everyone has a body part that they are gifted with. I LOVE static reps and weighted stretchs for calfs.
I'm dropping leg press now and really going to hammer them again, i was a bit bottom heavy but now i want em back up to atleast 30". I did snatch grip deadlifts from a 3" platform tonight for my quad movement, talk about a painful exercise with a HUGE range of motion, I think it was Charles Poliquin that said this exercise will trump a squat, i'm going to stick with them and work my weight up.
This was my routine when i got em up to 34" (diet 5500-6000 calories, logged it, 600g's carbs, can't remember other macro's, the diet alone made me silly strong.)
Squats: 2 sets (10 reps for 4 weeks, 8 reps for 4 weeks, 6 reps for 4 weeks, 4 reps for 4 weeks)
Glute-ham raises: 2 sets 8-10 reps
Leg Extensions: 2 sets 8-10 reps
Leg Press: 2 sets 8-10 reps
Adductor machine: 2 sets 8-10 reps
Standing calf raises: 2 sets 8-10 reps
I did everything in percentages and when i got to 4 reps i cut out all assistant exercises, i never maxed though i wish i had

. I almost cried when they got rid of the glute ham raise, that thing alone i credit 2" on my legs, my hams have never been as good

. So that was leg day but i was also deadlifting in the same week and i did Heavy hyperextenions 100lbsx15 reps so that helped my hams as well. I was trying to make them freaky so i wanted every ounce of size so hams and adductors were a priority, ya they were big but they looked like they were off-season, as i was too chubby.