I know that OP loves this place, but I've done an attempted transformation of an old farmhouse into a modern dwelling. I had some carpentry and concrete skills, and I learned enough wiring and plumbing skills to take it on. (Usually these things you think you will do over time, then one night you wake up with that funny smell of heated up bakelite. Wiring project starts next day! Better find a book!
And the time we came back from a Christmas vacation in Costa Rica. We are sitting in our nice little glass surrounded breakfast nook, watching birds in the feeder outside the window, and we notice a rather alarming slant to the room. Foundation project starts next week! Buy railcar jacks, buy choker chains, learn something about foundations. Then be very carefule not to get buried in rubble while you crawl around with the skunks and rodents, trying to find out just what is down there.
Old fashioned NW country construction. Fell a couple of old growth cedars. Limb and trim them, drag them into place, put your floor joists over them, and start building. They're called mud sills, for reasons that will become clear if you ever see any.
My task- to get those now rotting cedars ( 40 years on) out of there, without pulling down the house. Unbelievably risky, and tremendous fun too- but more for a 30 yo former hillbilly Mother Earth News reader (me at the time) than a middle aged, middle class person. I then excavated a crawl space lying on my back with a shovel, putting the dirt on a skid I made from sheet metal, and my 4 yo son and wife pulled it out with a rope and dumped it on a sheet of plywood. Think we didn't have good appetites at supper? Later a welder friend built me a nice mild steel skid, with a sled like bevel in front, and low sides to limit spills.
Next learn a lot about concrete and forms and piers and home construction of laminated beams, and wind and earthquake tiedowns, on and on.
Then later- hornet infestations which I also solved country style, and various other things requiring inventive plans and a certain strange and non-standard personality.