Ready or Snap

[sm_bbcoach]

HAd this play last week and I want to confirm myself.

4th and 4 @ k24. k punts ball. R-83 muffs kick @ r42, and K recovers at r43. 1/10 for K. Clock on ready or snap?

I did it on ready since the kick never ended with muff, K reached the line to gain, just a normal 1st down, ball inbounds.

If I am incorrect, please elaborate why.

Thanks!