I have already got the sheet on the paint, one of the first things I did when this came up. All it says is... "Allow base coat to setup for 15 minutes prior to clear coating. Longer dry time may be required depending on shop conditions and the number of coats applied." No where does it say "...but no longer than..." or something to that effect.
I do have some base left if needed but it'll be very close on even getting a lite once over.