I ended up buying a supplied air system from this co:
http://www.turbineproducts.com/breat...-w-vinyl-hood/
The deadly vapors and particulates that you inhale when doing this work will kill you dead fast so I finally broke down and got this pump and air charged hood to keep me in fresh air. I have been using a half mask with cartages that don't get change out enough and have been pressing my luck. I sprayed some urethane a few weeks ago outside in the open air and got gassed good not to mention not wearing gloves and the gun leaked all over my hands. Well long story short I woke up with a head ache then when I went to stand up I couldn't walk due to the cramping in my legs and muscles. I got a dose of temporary (I hope) nerve damage that had me bound up for a couple of days. It went away but I don't really know what damage I did to myself. Well after that scared the hell out of me, from now forward, I will be using the supplied air unit when spraying any 2 part paints. Full tyvec suit and air supplied hood. That or I have a full mask that I may adapt to the air pump. Not playing around no more. For under $400 Shipped it was money well spent. I should of done it a long time ago. I thought just because I was out side in the open air I would be fine with a half mask, not so. Now that I bought air supply, I have a few more to do. As GFS mentioned I got a C10 as well as the 25 seafari needing paint soon so it will get used and be money well spent if it all works.