Can you guys give me some suggestions?

Ok I am building a media pc/media server with little to no budget,if fact i am trading stuff i don't use for the cpu,ram,psu i need.

It will have a 7900GS,a tv tuner card,a scsi card and a ide card,then 4x 73.3GB scsi drive,5x ide drives(3 80GB,1 60GB,1 120GB) and 2 sata drives(1 160GB and 1 120GB) for a total of 993.2GB of space lol,now the only spare case i have only normally supports 4 drives,so i put the scsi drives is the drive bays(there is a 120MM fan mount infront of them)the rest are jury rigged around the case,and the only other fan the case supports are 80MM fans.

So this beast is going to be running really hot lol,and i will force my self to scrap up enough change to get some decent fans to make sure nothing fries.

What i need are some suggestions for a 120mm fan and 4 80mm fans that will help keep this beast cool.

for 120MM there are plenty of options, and still a few for 80mm, but first to help id like to know

1) where will the fans will be mounted, any obstructions ?

2) is silence preffered, i know scsi drives will be loud but point still stands

3) how much will you be willing to spend

1)The 120mm is at the front bottom of the case blowing over the scsi drives,2 80mm fans are on the back next to the IO,1 is on the top of the case in the very middle,and the last is in the very middle of the case side panel.

2)Silence is preffered,but i am willing to sacrifice it to make sure nothing melts lol,plus i have a onkyo 6.1 surround sound system so i can always turn it up a little more to drown out the fans lol

3)As cheap as can be and still be good enough to keep stuff cool,cause i don't have much extra money,but the max is $40 and that is kind of pushing a little.

OK while i dug trough my stuff i found 3 80mm fans,and there was one already on the case, i have put the 2 at the back as exuast and the one of the top is thew same,the one on the side is intake,and i plan on having the 120mm as a intake.

Do you think that will keep it cool?

I found a 120mm fam,BUT it is a dell fan from a server and it has a weird connector, i found a connector to use normal fans on one of those mobos,but i have not been able to find one that does the opposite lol here is a link to what i did found.

http://www.acousticpc.com/dell_computer_fan_3_pin_cable_adaptor.html

The black connector is what my fan has.