You definitely do not want to grab a hold of one that has had pellets smoldering in it for a couple hours or more. You can't grill a steak with it either. If the old oven works I would be tempted to vent it on the side with a cover that can be closed when not in use, and still be able to power it some how. That way you could smoke with the tube and still have a source of heat for curing. Bradley & Masterbuilt Smokers are just miniature versions of this. Maybe build a stand with rollers so you can store it in a garage and roll it outside when using?