Two real paths:

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Option #1:

Just buy the X1C. It's the best printer at your size range and price category (I own this, a Prusa Core One, and several creality machines).

Frankly - spend the extra 100 dollars and get the Combo with the AMS 2. Even if you don't want to do multi-color prints, it saves more than enough time switching filaments quickly to make it worth it if you're printing with any regularity.

This will let you use a 3d printer like it's a tool, and as someone who is printing CAD designed structural parts - it excels at just popping out decent parts, in all of the materials you want for structural parts.

Lock it into LAN mode. Despite claims to the contrary it's quite repairable (ex - I just replaced the hotbed on mine because a lightning strike damaged the torque sensors [side note - it fucking finished the print on resume when my power came back up - even without working torque sensors on the z axis]). Parts are available, they aren't outrageously priced, and the instructions are plenty clear.

Personally - I would strongly recommend this path. Understand what "good" looks like in the space before branching out into other requirements.

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Option #2:

Build a Voron Kit. It's going to take you several days of full time assembly, It'll cost more for the same quality, it's going to have some maddening "dial it in" moments.

But you get a machine that you fully understand.

You'll need to be very comfortable with both hardware and software for the assembly. If you want anything like the remote control & monitoring of corporate printers, you'll need to be comfortable hosting your own services and exposing things on the public internet (ex: tailscale/wireguard or just plain public).

Personally - DO THIS! but don't do it first. First get an X1C and understand what good printing looks like.

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Everything not a Voron probably isn't really "open" in the sense that you want. (Sure - you can flash a lot of machines. You still own that machine - it doesn't magically become higher quality, and most things run a Marlin/Klipper variant anyways)

Everything not a Bambu is a step backwards in print quality and ecosystem experience.

The middle sucks on all most fronts except price, but 1k is enough to get the better machines.