Put all day long. It's where scores are made. Few courses (assuming your playing the right tees where choices are available) need you to be driving that distance to score well.
I'm average around 220 (250 on a perfect drive) and have few problems with almost every course I play re length. I am certain if someone done research on this the putting certainty would reduce scores a lot more than 300 yard drives
There has been research done, and the results are literally the complete opposite of your assumption.