total case airflow help

[viet-intel]

heyo, i'm trying to figure out what airflow i should achieve for my case with the specified items:

antec slk3000-B case (including fan about 78cfm/30~37dBa)
DFI Lanparty UT nF3 Ultra-D (cuz agp card)
amd 3200+ venice
antec true 480 psu
thermalright xp-90 w/ sunon 92mm
arctic silver on all
6800 ultra stock cooling
twinmosSP 2x512 w/heatspreader
80gb sata and ata

-i will try overclocking ram, cpu (to 2.5~2.7), and gpu (maybe, 20% chance)
-i want to keep my case closed and keep sound at a minimum but cfm at a high

any suggestions as to how much cfm of airflow i should achieve? thanks so much in advanced

 

[viet-intel]

bumpity