Jeff,
I imagine that you want the part to look nice?
It would be tempting to get a 2" or 2.5" diameter shear hog mill and cut it in one pass. But, you might find that to get a nice finish, you would need to climb mill. So with that in mind, the mill you look for needs to have some anti-backlash nuts, or be in very good condition so that the backlash is quite small, all the way from one end to the other, for the full travel of the table. That could be a tall order to find in a used machine.
Or, you can conventionally rough mill the part almost to finish, then take a final cut in climb mill mode to put a nice shine on the part. A small air blast is almost essential when conventional milling to prevent the chips from being pulled in and welded onto the part, which really roughs it up and looks like hell.
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)