With calves keep things simple:
* Train calves twice per week, one light day and one heavy day
* Seated Calf Raises: 3 Sets: 20, 12, 8-10 then Standing Calf Raises: 2 Sets: 12-15, 8-10....this would be your heavy day.
* On the other day do standing calf raises (even if you have to stand on part of another machine, etc.)...2 sets of 50 with your own bodyweight.
Depending on your diet and rest (recovery in general) they will be sore as hell for the first week for sure and probably through week 2 depending on your previous training. After following the above for 4-6 weeks switch to a light week then a heavy week. After that you can probably stick with the heavy training and maybe add another set with a drop at the end.
Give it a shot and let me know if you add some size and strength. It isn't overtraining since calves are a specific group and you can also add this to any other day of training... so it is easy to implement on any split.
Good luck...