Just thought I would post my experience following these instructions.
I arrived at 2:30 and was at the In-n-Out by 2:45. It is now 4:00 and I am comfortably waiting for my flight at the LAX RCC after taking my time at the In-n-Out. (I even stopped by the bank!)
Thanks a lot to everyone for the instructions. It was super easy to get to the In-n-Out with the red Parking Spot shuttle.