Looking for local Rocket Mass Heater Expert / Installer in San Francisco Bay Area (Los Gatos, CA)

I am looking for a local expert (or someone travelling through) who can build a Rocket Mass Heater bench approximately 2' high, 2' wide, and 7.5' long to fit against the wall (plus the fuel intake and drum). A few things I would like to incorporate include a bypass, a close valve (when not in use), a way to pre-heat water (nothing dangerous - coils in the cob, not around the pipe). One option is to pay you to do it while I help and learn and the other is to see if we can have a class, but at the end I want a working RMH. Please message me if you have experience with this. I look forward to talking to you.

Regards,
Patrick

I am looking for some riserless ideas if anyone has them. Here is the approximate size: