I will say this, and you can take it any way you want. Ozone in large quantities in confined spaces is bad. I use carbon to allow the water to pass through before it hits the sump. Thats it. I don't filter the air and I don't worry about it either. At its worse I think I smelled a little bit when I first set it up, because it ran steady for the first few days. Now I have mine set at 10mg/h and it still only runs for a few hrs a day. My advise to you is this, if you are very concerned about the effects of ozone, don't get one. The benefits of it are still debatable. I did notice my tank got clearer and the cyano I had did disappear, but I don't think the ozone cleared it up by itself.
The orp controller built into my unit turns it on and off at specified levels
I don't use the air drier
I don't use an air pump. I just let the needlewheel suck it out.
I do use ozone resistant tubing, but just cause I bought it when I got the ozonizer.
I don't smell ozone anymore unless I stick my head into the sump just about.
I never felt any affects from it and neither has my wife or kids.
Setup for me is simple. Plug in the ozonizer, plug in the orp, and set the desired end level and output. Easy as 1 2 3.
HTH
Happy reefing
Josh