Is this the ideal timer synchronization?

Okay, first timer grower here with a basic question, is this the best way to set up all my timers?
on/off
Light/exhaust 18/6
Space heater 6/18 (when lights are off) *optional
Airpump - 24/0
Nutrient pump - 15 minutes every 2 hours, once during the lights off cycle
fan -24/0

Depending on where you reside or grow I should say, you don't need to have the space heater. And I honestly don't think you need the fan going on ALL THE TIME. Make the fan 18/6. Also just make your nutrient pump give the plants water when it is daytime. They need the darkness to respire, so don't worry about feeding them when they are already using the nutrients you gave them during the day.

My preference, if the fan that circulates fresh air also cools the lamp, is to have the fan on its own timer that continues to run for an extra hour (or half hour if the timer has that option) after the light turns off to make sure the box does not retain heat from the lamp.