Im painting my bedroom and got a couple questions?

You may be able to do it in that time if you can recruit two helpers. First you will have to tape everything off. Next you will paint the ceiling, then the four walls and lastly the frame boards. I don't know if you've ever painted before but it is tough. Your arms get tired after a while, especially when you're painting up high. And then you have to put more than one coat on so, yeah. I think you can do it with the assistance of some helpers. Can you stall your sister? Maybe tell her to go pick something up for you on her way home? Also, I would say you need approx two five gallon cans to paint this room.