on your spray, crouching is not needed, you tend to crouch too early and a bit too much. When crouched you head is much easier to hit and your character becomes wider. Plus your movement is much more limited. Counter strafing is much more efficient. On your aim you are above average, game sense i dunno. Don't think of crouching as a way to lower recoil think of it as a way too get your crosshair lower, faster.