Too Much Time Between Coats?

The directions (Rustoleum Marine Primer / Topside Paint) is clear regarding the minimum time between recoats. My question is, "May I wait a prolonged time between recoats as long as I prep the surface properly?" My work schedule and the amount of daylight are making it difficult to put on a second coat of Topside paint. I was wondering if this can be finished in the spring.

Regards,
JV