Using the above techniques you can do it directly in Rhino by using View/Background Bitmap/Place if you like. Results can be very good with a little practice. I'd recommend using the Interpolate point curve to do your tracing. Things like neck pockets, pickup cavities and other "exact" features should of course be done by direct CAD and not by tracing.
This technique comes into it's own though when all you have is a photo. You however have the real mccoy to copy so you might consider waiting until you have your cnc and use edge/profile probing.

Cheers

Ian