Actually, I have heard really good things -- cooks illustrated tested and recommended the Savu smoker bags (see the second paragraph in the link below)... Never got around to trying them myself, but this is inspiring me... Here is a link that might be useful: Cooks Illustrated on smoker bags

I agree with Sophie. The unit I was going to recommend would cost around $2k. Multiple units to meet your requirements would cost around the same. Can your space accommodate multiple items to meet your needs? A separate smoker, a separate grill and a separate oven?

2Many, I was thinking about how to use the 12" tube for shorter smokes. First thought was to loosely crumple some aluminum foil and stuff in as a space filler and then add pellets to fill. (Except getting foil out would be a bit of a pain.). Thinking that a partial loose fill might cause the pellets to burn too fast? After I ended up with that huge 40# bag of pellets decided not to worry about it; I'll just fill it up and let 'er burn out past the time I remove the food. With pricier pellets, yeh, I'd try conserving the fuel. Course this then strengthens the argument for adding a 6" tube...for shorter smokes and adding part way thru longer smokes. Then again, I was pondering last night why something like a tomato paste can or two with a bunch of holes punched in it wouldn't work... (from a brand with a removable paper label.) Pulled a couple of chicken halves out of the freezer last night. Going to brine overnight and smoke 'em tomorrow. Thinking I'll try to confine the smoke a bit better with the chicken going on what you learned with your bird. I bought the chicken already halved (was in the reduced 'Use today or freeze' bin--perfect, I thought for experiments!) so the halves may be a little more receptive to smoke than a whole bird? Also, more prone to drying out but brining ought to help offset that... This is actually kinda' fun to do. Needed that cause I get burned out on cooking!

There are: good, better, best, premium. You have almost good. Why are you concerned about the paint flaking off, it it happens? Are you in a ocean humid coastal environment? You read some negative things, did you read any positive things? If you get Your grill too hot, the metal will expand, the paint adhesion will lesson as the metal cools. That is what happens. One doesn’t have to prep and paint their grill.