^^^ This is just not correct at all... ^^^

With positive pressure (more going in than coming out) the hot air in the grow tent will be forced out of any gaps that may exist (zips, doors etc.). You want NEGATIVE pressure inside the grow tent. That means that all the hot air is removed by the fans sucking air out and is not forced into the room.

To be honest, you don't really need intake fans... If you have exhaust fans, the negative pressure will suck air from the room into the grow tent, making the intake fans relatively unecessary