I mix stone with wood as well. It gives a nice, homey look. I use core wood sparingly, as it is a bit too "rustic" for me, unless I build a log cabin in the Black Forest.

What I did with my main base was, that I had it built with the short wood poles as stilts and the floor elements on top of it. I removed the floor and put stone floor beneath it, then put the wood floor back on. You don't see it from the inside, but you can see the stone floor at the bottom of the wall from the outside, which makes for a nice look.

My later builds all involved a mix of wood and stone.

Edit: Here are a few pictures.
https://steamcommunity.com/sharedfiles/filedetails/?id=2787313039
https://steamcommunity.com/sharedfiles/filedetails/?id=2776742280
https://steamcommunity.com/sharedfiles/filedetails/?id=2785635488