After a ton of searching I think I am going to go with this pump: pump from harbor freight

It runs at 145psi and will maintain that pressure. I learned just recently that not all pumps will self prime and maintain the pressure. So tomorrow I will see about getting an R/O filter system and this pump.

The container is still an issue. I located a 2x2 growing tray with lid for about 70 bucks or I can do rails. I asked about getting the rails that the Aeroflo system uses. I can get them but they are 100 bucks each and I probably need 2. Forget that! I have been searching and searching for vinyl 4x4 fence posts and might be on to something finally. Apparently there is a place in my area that makes them and they will sell me whatever I need to whatever length I want. They make an end cap for these posts already and tonight I saw an end cap with a 2 inch circular hole in the middle. Whatever it's true purpose, tomorrow I will be using it to run 2 inch flex pipe between the rails. My plan is to lay 4 posts next to each other since I only have 3 feet of width to work with. This will give me all the tray I need.

My biggest fear is that the fog wont pass through the entire length of the tray properly. I'll have to play around with it to make sure the fog propagates through the entire system. I'm not sure which will work better either by daisy chaining the rails or splitting the lines so that the fog goes to each chamber separately.

I will have a mister at the beginning of each rail post which should circulate nicely.