coming from me, i've always had good calf development due to the fact that I was a sprinter and pole vaulter in high school.
so the main one's that i do are seated calf raises (full extension on the down swing), standing calf raises (again with the full extension), and I'll sometimes throw in some one leg raises on a stair or something and do them real rapid to get that quick twitch fiber...almost like i'm jumping, i like those they burn me real good.
and i'd say if you don't train chest 3-4 times per week, why do that with a much smaller muscle group?
if you run, walk, stand, or use your feet you are giving your calves a work out, so why over train?
*knowledge*