to tell you the truth im not really interested in a sub freezing system because of the fact i don't want to have to deal with condensation because i live in IL where in the summer its humid as hell.
But, Direct Die does sound the way to go then. My uncle works for a propane company so maybe i can get discount high grade propane

and my dads buddy is in the heating and a/c buisness so he can help me do the tubing and everything. Are there any tutorials you guys recomend for this kind of cooling because i have never done any extreme cooling and this just fell into my lap so im running with it.
ok, i did some research on the temp i want to achieve. 21C at the min and 30C at the max. I figure the dew point never gets below 70F here so i picked that temp.