Quick up-date on my growing plans.
Im still on the fence as far as up-grading to an Air Atomized system or staying with the HPA. I need a new pump and some other parts if I stay with HPA. Switching to AA will only cost me an extra $50 or so - BUT - that assumes I can find cheap nozzles that work.
I found some inexpensive air nozzles on Amazon, and ordered one to play with. Total cost was around $25.
A single nozzle will likely be enough for my size chamber, but I wont know till I can do some testing. Im actually hoping the flow rate can be dialed down enough so I can use two - for a better mist spread.
I have two old, very noisy contractor air compressors I can use for testing. If the nozzle works ok, I will probably invest in a quiet air compressor.
Once I get the nozzle and start doing some testing, I will start a new thread for that. This one is just about long enough 
I dont plan to start my next grow for at least another two months, so I have time to play around.