with wulfy's build, it should be easier than most all-in-one routers. You just write the image to the SD card, plug in the USB ethernet dongle, and turn it on. If you can use a screwdriver you can put together the cases you get in the typical "kits". Unlike some all-in-ones with soldered on storage, there's no way to brick a Pi, you just remove the SD card and rewrite it from scratch.
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