Well, if you can open doors and windows and easily exchange all the air in your workspace in a jiffy, then one of them dust distributors might be OK, but I think you should save your money until you can afford a good cyclone, either building it or buying it, or a combination of the two
If you can still get a Clear Vue cyclone, buy that, and then build the blower for it, you will save money and you will have a very good cyclone.
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I built mine in July of 2005 << and I have had no problems with it, it really sucks. My dust bin holds 120 litres (32 US gallons) of dust, and I've not emptied it 20 times, so that is 2400 litres (640 US gallons) of dust, and each time I empty it, I bang the filter stack, and then empty out the clean out, I have maybe 300 ml (just over one cup) of dust from the clean out so far (I keep it in a jar)
I have no build up of dust in my duct work either, I've checked.
Just my opinion, and your situation could make that moot, but I'd save your money and buy a cyclone, kind of like buying cheap tools that wear out or do not do the job right, they are much more expensive in the long run. Again, just my opinion, but remember, my workshop is in a hole in the ground with the only egress being a hatch in the floor of a parking space, so YMMV
It is good that you are thinking about this stuff!