With the user name and profile pic, I am not doubting it.Outdoor shower with dual shower heads, preferably with at least some privacy. Boss let me use his cabin for my honeymoon with my wife that had a kick ass outdoor shower with dual heads. I won’t bore you with the details but needless to say it got used that week. A lot.
Solid core doors are nice for bedrooms/maybe even insulate some interior walls for sound reduction, hot water somewhere on the exterior for washing dogs/kids, and if you have a fireplace insert I would overbuy for heating the space. I have one in my game room 20x14 w/ 10 foot walls/14 foot peak which will heat the room faster than the one in the bedroom which annoys me.
Pocket doors seem great but suck. Would go solid core there as well as the hollow ones can warp over time.