I just want to make sure I have this right.

Pit stops will be monitored by making sure that the two laps surrounding the pit stop total more than 2x fastest lap + 4min 14sec. Seems odd that it is not using 5min 14sec as the adder, so I want to double check.

Here is what is stated in the supps:
6. Pit Stops: There shall be at least two (2) mandatory five (5) minute pit stops. Additionally, any other fuel stop shall be five (5) minutes in duration. Any pit stop may not commence until at least one (1) lap after the green flag starting the race or less than six (6) minutes prior to the checkered flag. The official Timing & Scoring results will be used to determine the fastest race lap for each competitor. The 40 mph traverse time for pit road at Road Atlanta is 14 seconds. Lap charts will be examined to ascertain that each competitor did have at least two laps equal to their best lap time plus four minutes and fourteen seconds.
7. Pit Stop Penalities: The minimum penalty for each short pit stop shall be assessed in this order:
1 to 30 seconds = 2 laps
31 to 60 seconds = 3 laps
60 to 120 seconds = 4 laps

Pit stops short by more than 120 seconds (or no pit stop), minimum penalty is to be moved to last place in class.