modern, clean, comfortable
I like grays, neutral off White and darker greige colors.
tall ceilings, chair rails in the dining room, a chunky fireplace with substantial mantle
The new house sounds beautiful! I actually love it when people put some modern things in a traditional home. Let's seen if we can find some pictures with modern pieces in traditional homes.
I'm just going to show you where I got this image because I think the whole post might give you ideas:
https://jane-athome.com/modern-dining-room-ideas/
The chairs might not be right for your taste, but I like the mix here.
This might be a bit too close to modern farmhouse, but with different chairs, it might work for what you're trying to do.