I just subscribed to your blog! We're going to start our build soon so it'll be nice to follow it to see your progress. I like it! Here are some photos I've saved to my Pinterest folder. They may give you some ideas? This is kind of the ultimate beachy craftsman house to me and (a lot of people in the blogosphere apparently): Here's another example with more privacy on the sidelights. You could easily envision this with a transom above: This appears to be the same door as the one in the beachy/craftsman house above but without the transom and sidelights. I think you could alter the surrounding treatments in many ways: Here is a variation on a traditional door that contains a mail slot. It has the transom above. But you could add sidelights to it: A traditional door with a mail slot with a transom. I can imagine it with sidelights: An inside view but this looks nice: You could do something like this where the mail slot will fit nicely down low in between the squares: I really do like the top option the best (though the slot would just be inserted on the door and not between anything I suppose) and think with divided lights it would work great too. I'm thinking about a similar door for our home. You could do any of the doors in a deep charcoal gray, black or stained...

I'm going to say none of above (if pocket doors not an option).... I see french doors in new construction offices all the time and all I can attribute it to is "what everyone is doing" because from a practicality issue it makes no sense to me. Most people's offices are for working in and are functional and private and often times, messy! Why would people want that to be "open" to everyone? You certainly don't want your guests to see it and it is even unappealing and even stressful to look at a space covered in piles and clutter. I know everyone's office is not this way but trust me :), most are not the tidiest rooms in the house! Put solid doors that offer noise control and privacy. Also gives you other options if for some reason it needs to serve another function at any time- i.e. guest room.

Would not want a barn door. IF exposed to kitchen or laundry moisture, don't do pocket doors. If this door is to be from an entry far away from the moisture of a kitchen, bath or laundry , pocket doors could work. Solid narrow doors as pocket doors: https://www.pinterest.com/pin/762023199420251895/ Solid doors as french doors. https://www.pinterest.com/pin/116952921543920445/ You might consider half width French Doors that have side hinges or are pocket doors. https://www.pinterest.com.au/pin/568368415449351477/ Depending upon what you're doing with the wall in which the door is to be located, you might also consider a bookcase that is really a hidden door. https://www.google.com/search?q=bookcase+as++hidden+door&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjJ0b73kr_pAhUyYjUKHQozCYsQ_AUoAnoECAwQBA&biw=1259&bih=648

IMO you will need to paint the ceilings for sure but IMO they look like popcorn ceiling and I would be removing that and going smooth for ceilings . Once you paint it then removing it will become much more difficult. Drywall would be the cheap answer to the stone wall but I would add the mantel and then see if you can live with it the way it is, sometimes texture is just nice to have on a big wall.