I don't think the chute capacity/fire size would be too compatible with an offset personally. That gravity fed option works great in a cabinet style that can be heated with a smaller fire core though… like a stumps … just my personal opinion….
And on the eighth day God created barbecue …. because he DOES love us and he wants us to be happy.
Current smokers: Egor (trailered RF) and Easybake (tabletop pellet drive)
It sounds like to me it would work but it would require a FB for the burning charcoal probably about 10" square, use a 15 to 25 CFM fan system to keep the temp up, then the chute would need to taper up to about 6" with an over all height of 5'. That should hold enough fuel to burn 4 or 6 hours. I would say this CC should be thick if not insulated, and maybe under a cover so the rain wouldn't shut it down if it started. That is just guessing because I haven't done it, but from what I've learned.
jm2cw
Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........
I was thinking id make the chute hit of 5x5 steel box or similar and run it, if it only lasts four hours il make it taller!
I'm also hoping if the draw is strong enough it wouldn't need a fan.... I might make the burner first and make it a separate item and bolt it on, so if it turns out not to work I can take it off and hide it somewhere.