I'm bad. I leave a single chick in the 'bator until at least one more has hatched, and both are fluffy. Then I take 'em out to give more room for the others still to hatch. That's usually overnight.... for me.... so far.... with only four hatches under my belt....
Two of my four hatches were only 3 chicks out of 7 eggs. One would hatch first, I'd leave it in overnight, and by morning (or once, when I got home from work) all three were all out and dry. The two times that 6 hatched, I did remove two chicks after 18 hours or so, to put them in the ready brooder and let the rest of them hatch out.
But yes, the feisty activity is something I believe helps "encourage" chicks still in eggs to work harder at getting out.
Oh! And congrats! Isn't it the MOST wonderful thing in the entire world?? So magical! New life from an egg not much different from those we cook and eat!!!