will doing strictly calf exercises hinder speed?

my main race is the 800, & I already lift heavy 3x per week on top of running. My lifting routine looks something like:

A

Squat 3x5

Deadlift 3x3

Overhead Press 3x5

Row 3x8

Bench 3x5

Chinups 2x20

dips 2x15

core

B

Deadlift 3x3

overhead 3x8

Row 3x10

Dips (+20) 3x8

core

I have small calves though and I would like to isolate them specifically, would doing a couple calf exercises (heavy) help my running or hinder it? Also, can someone critique my lifting routine?