Your extra training day is dedicated to hamstrings and calves, which are often trained as an afterthought on leg day. Not here. There are a couple of unique set and rep arrangements, so pay close attention. Keep your rest periods short, like 45-60 seconds if possible.
Machine leg curl: With these first sets, you'll do them one leg at a time, but once you hit failure, immediately go to the opposite side. After that, don't rest; switch right back to the other leg. Continue this nonstop for three total segments per leg, which collectively equal one "set." So the first time around, you may hit 8-12 or more reps, but the second and third time, you'll likely manage far fewer.
Deadlift: This is going to be a burner, because you're going lighter for higher reps. Choose a weight you can do for 20-25 reps, taking it close to failure. Then rest briefly and dive back in with the same weight. If you get 15 reps, great. If you get 20, you're an animal.
Standing single-leg bodyweight calf raise: Double the stress on your calves by doing them one leg at a time. The technique here is the tricky part. Go to failure with one foot, then switch to the other, and continue this back-and-forth pattern until you can no longer 6-8 reps for each side.