Picture Update!
I finally found some time to snap pic of the routed control cavity and finished tummy contour.
To route the control cavity, I made 2 templates. The first was used to rout the cavity itself, which I did first. For this I used a 1/4in piece of plywood, drew the inner cavity dimensions on it, and took out the excess with a forstner bit. I then cleaned the inside edges with a file, and taped it to the body. This template can be clean, but doesnt need to be perfect, as its going to be covered by the control cover. Also, the template can be somewhat thin, as you are going to take the router deep into the wood. After clearing the hole with a forstner, I cleaned the cavity with multiple router passes. Even though the template was thin, my 1" router bit still wouldnt reach the propler cavity depth, so I just removed the template and used the existing rout as a guide for the bearing. This brought the cavity to the perfect depth.
Next, I made the template for the cavity cover recess. I did this using the same process as outlined above, only I tranferred the shape onto two 3/4in pieces of 6" wide scrap I had lying around and screwed them together. This template needs to be thick, as you are only going to be taking a small amount of wood out for the cavity cover recess. The reason I did this after the main cavity rout was so I could visially place the recess in the best area...no fancy see through acrylic templates here