Finally got an answer from Oneida. The 4 inch model only comes with the piss ant 15 gallon bucket (too small to call a tub or barrel). So I'm going to go for the 5 inch model, which has a 5 inch intake and 6 inch outflow. Going to use metal pipe from HD to hook it up to the 5 inch input of the HF DC.
I'll reuse the 30 gallon fiber drums I have now, but will have to cut a bb ply top since the existing lock on tops have two off-center holes for the Rockler Dust Right connectors. At lease it will make it nice and rigid. I think the Super Dust Deputy wants to sit centered on the drum.
Interesting that they want to force the $220 unit down my craw, so I wind up with the $170 dollar unit shipped free from Amazon. I'm not looking forward to fiddling with more mixed brands of connectors. We have 3 days of possible rain coming up, probably light showers at most. So I'll probably put off enclosing the breezeway where the HF unit sits. If I turn the DC the other way around, the duct runs will be shorter and fairly straight. I see a lot of aluminum type duct tape in my near future.
Not sure where I'll store my 16 ft extension ladder now, I liked having it out of the sun in that breezeway. More carpentry projects ahead, I think.
The biggest dust offender in my shop by far is the sliding miter. I'm thinking of building a nice flat porch outside the front of the shop, level with the opening, where I can pull the miter and the sander outside for use. I can just let the dust fly that way and keep it out of the shop. My breathing problems (not COPD) have me wanting to get those rascals out of there. Everything else has pretty good dust collection.
One other thing I've been thinking about is using the T track on the front of the router fence to mount what looks like a safety shield, but is connected to the DC hose. That would pull the dust straight up off the bit most of the time. That would produce a really strong up flow of a high volume of air. Any of you folks have any thoughts on this idea? Drawing is a side view.
The more I do, the less I accomplish.