Hi, we recently inherited an old house built in 1926. It has the original wallpaper in every room and on the ceilings. My daughter and I have removed and painted 2 bedrooms. The paper came off rather easy but the wall are rough and cracked. The finish look is ok for the bedrooms but I would like a smoother finish for the dining room and living room. Should we drywall over the paper or still take it off and have it power sanded? And what do I do about the papered ceilings? Drywall if there's major cracks? HELP!