If the two workers are each expert; and work smoothly together (that comes from practice); and there are no awkward curves or angles; and the walls are not more than single panel height; and there aren't too many windows or doors to cut around; and there are no/few closets or cubbies; and they aren't cutting out for electric outlets etc; and the weather cooperates by not being too humid or too cold or too hot or too dry; and all the materials are at hand; and you are amazingly lucky: No. I don't think so. However, a full crew in the best of circumstances *might* be able to hang that many square feet in such a short time.

It's ever so much easier to see a good drywall job than it is to do it. The walls will be smooth and level, with no bulges or cracks. Dimples from the nails should be smoothed over -- you may see the patch's color but you won't see a shadow. The joins (where one panel abuts the next) will be smooth, not rough or bulked and neither convex nor concave. (BTW, it takes a day or two for the mud to dry before one can tell how good or bad the finish is. Mud shrinks a bit! A slight concave is okay because the primer will even it out. Ridges are not okay.) Cuts for doors, windows, outlets, etc. will be snug without crumbles or jagged edges. If you can check when it's dark outside, lay a flashlight along the wall -- believe me, every bump will throw a shadow! oooh, that's nasssty.... there WILL be small bumplets in even the best of work, so to be fair you should not complain about what can't be seen in daylight.

And this may not be of concern, but I prefer drywallers who make sure not slop the mud around! Mud is a form of plaster, and it's really hard to get off the floor.