Time marches on....
I'm recovering from getting my other knee replaced, and I've had plenty of time to think. My original plan to install the propane cooktop in a drawer has changed to installing the cooktop in the "action area". Since my original plan has always been to install my propane tank directly below the action area adjacent to the Onan generator (taking advantage of the ventilation needed for the generator), this will reduce the gas line length to about three feet.
Naturally, some fiddling and arm waving will be required. Right now, there's a double level cabinet over the action area, as well as a panel that used to have plenty of ambulance stuff (oxygen, suction, blood pressure, etc) on it, plus a switch panel that can be reduced to half height (I can easily machine a new panel from 1/8 aluminum). At the same time, I'll convert the heating and cooling controls to a state-of-the-art Hoseline CM-3000 system.
The 2-shelf cabinet may be rebuilt to a single shelf, but that decision will have to wait a few weeks until I can climb into the buggy.