I had many of the same features on my wish list for a travelling machine. I don't think you can get needle down etc on a strictly mechanical machine,I think it needs the electronics to do that function. Also, the knee lift is typically only found on the larger (and heavier) machines.
I ended up buying a Janome M200 which is now branded Mod 200. It weighs 12 pounds and does all the other things you listed. There are a couple other models that may have fewer features. And it didn't cost anywhere near what the website shows, bought at the local dealer.
https://www.janome.com/products/machines/mods/