Case cooling

Need someone to recommend a drill size for boring out the fan cover holes on my case (or should I just remove the stamped cover entirely?). Case is a Raidmax Scorpio 868 rear panel below.


I want it to look more like below.

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Currently setting up to put a 140mm fan on the front and 2 80mm fans on the back for the standard low-in, high-out setup but all the excess metal is rather restricting. Thanks in advance!

Too much work. Just get a new case. NZXT Gamma. It's a new budget case. Or Antec 300. No offense, but RaidMax makes really crappy cases and power supplies.

This is the only one that is decent http://www.newegg.com/Product/Prod [...] 6811156078 The SMILODON

Ok, so I sawed them all off. I'm not great shakes with power tools so it's not the best looking job but as I don't plan on posting pics I'm the only one who will ever notice! :-).

To masterasia, I blew all my $ for this new build on the hardware so I can't get a new case and the wife would notice that :-). I replaced the PSU from the start so no worries on that front.

So the holes are in and the fans have been mounted, does anyone have any ideas for a way to visiually detect the airflow through the case so I can find any hotspots. I was thinking about dry ice but am worried about moisture (not from the dry ice but it's humid in GA and reg. ice can build up and sublimate). Should I just use a laser thermometer? Thanks in advance