i am hanging stripe wallpaper horizontal, one wall .. the wall has boxed in pipes right in the middle the boxing is about 7 inches by 2 inches, would it be wise to try and hang paper in one go straight accross i feel this would be tricky or would it be ok to hang paper to the edge of the pipe box then paper over the box and then another length the other side so doing it in 3 pieces making sure it is straight... if this makes sense. or just paint the boxing in the middle white.