Looking good, Greg.
This design is similar to the Anila Biomass Gasifier stove. The first one I built was inside a propane tank, and the raw wood was loaded into the tank via a hatch on the side. It worked well, and took about four hours to make a good batch of charcoal. At the base of the inside vertical tube I drilled four 1/4" holes which jetted into the burn chamber. This was a very non-linear burn that roared like a rocket engine once it got going. When it finished, the four small holes did not allow the charcoal to burn up, so all you had to do was leave it sit for several days to cool down, empty, and reload. A few times, I inserted a copper coil into a large pot on top of the stove, and pumped it into my solar water collector tank, thus using the heat coming out of the top of the stove. The water in the pot reflects the temperature of the water in the collector tank, so even though it is receiving a tremendous amount of heat, it slowly warms.
The grate in my stove was a pyramid, and I used the little stones as recommended by the designer. Here is a YouTube video/slide show I made seven years ago: https://www.youtube.com/watch?v=gmjfXDdEU48
I used a blower from a discarded microwave oven, controlled by a ceiling fan speed control.
The hatch on this one is too small, so it takes a while to load and unload. Also, mice loved the insulation, and moved in when the stove was not in use.