Ok, sounds good I'm way ahead on this, but getting the plan together. I was thinking of getting 'close' to the trace line using an angle grinder and thin disks, and cutting away small rectangles around the perimeter, then then the bigger disks for finishing. And a small drill press and hole saw for the interior. Maybe a pneumatic die grinder might be available too.
Guess three local shops should be called too whether they be laser, plasma cutter, or waterjet to at least get a price point on a one-off, or a two-off.