I was planning on using two 8 inch fans one on each end, would i still have overheating problems? I was thinking 12'x24', but would i be better of 10'x24', or should I make it more square with two sets of hoods in line side by side? Also if i did go all in a straight line, instead of running straight through all four, I could run straight in through 2 hoods then 90 out in the middle. Would that help?Thanks for your advice Atomi.