Model is about 10x6".
I started a rough pass with a 1/4 ball nose, but I only ran it to 25% or so. After that, it was taking nothing off except at the edges, just a waste of time & electricity. So I aborted the rough and went right to the finish, which I used a 1/8 tapered spiral for, at 8% stepover. Took about 90 minutes, was well satisfied with the result.
I used 2 coats of walnut stain, with light sanding in between coats. Was going to clear coat, but it sure looked glossy enough to me without it.