See my latest post that is exactly what I am developing. This stove is designed to yield a daily allotment of char pellets for an off grid charcoal gasifier. So this goes a bit farther than your proposal as it takes all the work out of producing charcoal for an off grid gasifier for power.
The intent is combine with solar and use the char coal production for fuel to power, to top off batteries as needed. This stove has a dedicated cook top making it EPA exempt. It also has a hot water coil revision to produce hot water.