Delay on the Defense?

[RonRef]

This play happen last night in our college jv game.

After a punt the offense is out on the field in their huddle and defense is on the sideline huddling, we blow the ready for play and start the game clock the offense rushes to the LOS to snap the ball and the defense is still on the sideline. My question is do we stop the offense and wait for the defense to get set, do we throw a delay a game on the defense? With the new timing in the NCAA what if this happens in the last 15 seconds of the game, how long to we wait for the defense? This could be a good play for the defense to run sometime off the clock and put the offense at a disadvantage.

The rule in the book states:

Found this in the rulebook AR 3-5-2 V page FI 16.

After a change of team possession or any timeout, the ball is declared ready for play. When Team A has completed its offensive formation, Team B must promptly position its personnel. Team B will be allowed time to complete substitutions. RULING: Either team is subject to a delay-of-game foul -- Team B for not completing its substitutions promptly (Rule 3-4-2-b-3) or Team A for causing the 25-second clock to expire. Penalty—Five yards from the succeeding spot.