Sorry, but this actually isn't a good idea. Lab is meant to take some time and planning to try and get the highest score possible. For those who don't care about exp they can get 700 points once then just go through and fight the extra bosses without even trying. The reason why they're called extra bosses is because they are there to reward those for doing good. I don't like the fact I have many 450-600 streaks most of the time, but hey that's just the name of the game.