I think the vinyl wallpaper is a cool idea but in my experience the clear acrylic on the ceiling may be overkill. I had a 75 and sump 3” off the wall in my condo for 10 years and when I sold the condo all the only drywall damage I had was a bit of “puffiness” in the sump area. Sanded, quick patch, painted the wall, good as new after 10 years. I feel like you would need significant splatter to ruin drywall. That vinyl wallpaper would look nice and clean super easy; that’s a winner. Sent from my iPhone using Tapatalk