With regard to new 8x10 field cameras, one is generally restricted to Chamonix and Shen Hao, smaller one-man-band manufacturers not withstanding. There is the Intrepid, but I've heard mixed reviews and having seen one in the flesh (plywood and plastic), I'm not too enthused if you're looking for a forever camera. It's effectively an entry point camera into 8x10 and, as such, serves that purpose very well. If you want to see if 8x10 is for you then the Intrepid is one path to go, but take into account some restrictions (which may put you off 8x10) that may not apply to more expensive, better built, cameras. Alternatively, second-hand options are numerous, and this path may be a better option if you get a well-made example (Wisner, Deardorff, etc.). Second-hand cameras will hold their price, so you shouldn't lose any money when you move it on if you decide not to go with 8x10.
If you decide 8x10 is for you, you mentioned the non-field camera Arca Swiss Misura. Their other 8x10's are worth considering as well, the F-classic, etc. More expensive than a Chamonix or Shen Hao (or second-hand Deardorff) at around 6,000 to 7,000 €, but at around 4kg (9lbs), same weight as a Chamonix, it makes any of these a viable option, particularly as they can be broken down and the weight distributed about one's person when hiking off into the wilderness. It also has the advantage of precise movements which will be important if you like to use a shallow depth of field. Also, weight for weight, they're a little sturdier for the heavier 'normal' lenses required. Being modular, you can add another film format (by exchanging the rear standard and bellows) if your future self thinks that way. Price, while high, is still half the asking price of an used 8x10 Ebony! It would be a forever camera.
I used to be a field camera person (Ebony), but once I discovered the liberation of a monorail camera, I never looked back, but the tactile and sensory allure of a wooden field camera is very much still there. Practicability ruled over emotion.
Cheers,
Duff.