Back/Hamstrings/Calves/Cardio

My routine consists of the following today
3x12 rep per set

Back:
Wide- grip chin-up (140lbs on machine)
reverse flye(5lbs dumbbell)
Hamstrings:
ball curl
standing calf raise
Cardio ( a.m./ p.m.)
A.M. 20 minutes on treadmill
P.M. 35 minutes on elliptical machine