have you ever hung sheet rock on a ceiling?
I found out a 2X4 nailed to a short lets say:-k 30" 2X4 that looks like this T will help hold it in place so you can crew it or nail it up.
Have you ever taped and finished before?
Al I can think of is a stiff neck and or a nice, pinched nerve or two the next day that lingeres on for a month or so before the pain starts to slowly subside.
Well, that's how I felt personally after the last time I hung sheetrock.
My hispanic neighbors do it for a living, you should see hos fast they work, it will make you sick.