would it be better if i got a setup with an aluminum case with 2 rear 80mm Panaflo L1A's for exhaust, zalman 300 apf, and a zalman fan bracket cooler? thanks guys.
Aluminum won't help keep the case any cooler than if it was the identical case made out of steel. This "aluminum cases are cooler than steel cases" thinking is a crock. Anandtech did a test were they swapped out the guts between a steel SX10x0 clone and one of the aluminum knock-offs of it. The case temps and CPU temps remained virtually identical.
Check into the Antec SLK3700AMB case. It has 120mm fan mounts in the front and the back. I've posted pictures of it in the SPCR Gallery. This case has the best ventilation of any that I've ever used and is the first case that has replaced my beloved Antec SX10x0 case. It's also pretty wide which gives plenty of room for the Zalman fan bracket to mount with unobstructed airflow in front of it. Other pluses are the rubber-grommet mounting points for the HDDs to keep them quieter and the built-in front fan filter to keep dust out of the case.
Also look at the main page for the review of the Antec Sonata. It's kind of the big brother of the SLK3700 and looks like it should be the Top Dog in the quiet case field. Not available yet though.