I think the attempt at a colonial look just does not mesh with the organic modern look it also had. I know it was done often as well as with the Spanish look (stucco, beams, etc...), but I just don't care for it. I think you could bring it forward into a more 70s natural look. Keep the ceiling and the slate floor, and try to work in clean elements and curves. Using raised panel doors and those hinges just did not look great when new, so to recreate would be period appropriate, but a mistake. I think a retro modern kitchen and vibe would make the most sense. Like noted above, you can use regular cabs under a curved counter. I could see it looking groovy with vertical grain veneer cabs, some retro color accessories and modern art. You can do an older style in a fresh way. There is no need to be a slave to someone else's vision for it, whether the original owner/architect, or some future buyer. If you added curves to your pix from 15:42 today, that would be quite nice. I am not sure you should whitewash your wood, but it is not a bad option. I would hate to see it get painted though. The workmanship and lines of it are really nice and that would sully it. I don't see too many painted surfaces as working in your house. I can picture grass cloth wallpaper and maybe some white walls. Certainly, you should skip crown molding.... Some funky table lamps in chrome would fit in as would some plants and macrame. I'd try to go for an ahead of its time look from years ago....

In the photos the table & chairs pictured with the table appear to be a more "weathered" finish with a greyish tone. The pic of the alternative chair appears to be a more traditional finish. Does not appear from the pics that the two finishes would be blendable.

Here are a couple more outdoor options: https://www.overstock.com/Home-Garden/Cordelia-Contemporary-Loveseat-With-cushion-Light-Gray-Finish/17970813/product.html https://www.overstock.com/Home-Garden/POLYWOOD-Vineyard-3-Piece-Outdoor-Deep-Seating-Rocking-Chair-Set-with-Table/20489721/product.html

In addition to the chair you are reupholstering I think it would be nice to add another guest chair, but one that is very earthy, organic and simple. In general I think to make the room really work it would be good to now take more of the dark earth and shadows colors out of your painting and bring them into the room with accent pieces, like pillows and throws on the sofa Something more like this below for the chair near your fireplace