Case for new system being built - Fans installation suggestions

[Luigin]

Hello,
I am building a computer that I will use for video/photo editing. The case I bought has a lot of openings for installation of cooling fans. May be too many and I am not sure if my configuration of fans makes sense, so I am asking for your kind feedback.
The case is a Cooler Master Elite 431 Plus. It came with a 120mm fan installed on the front panel (which pumps air from the outside to the inside of the case). I have bought two more 120mm fans and I have installed them as you can see in the picture...any comments/suggestions? Should I close/mask the openings that are left with no fan?

Thanks in advance,
Luigi.
P.S.
Image can be seen here (for some reason TH is not letting me attach it to the post):
http://i44.tinypic.com/2gv28oi.jpg

 

[J_E_D_70]

Can't open your photo from work, but I'd go front intake, bottom intake, rear exhaust and would not cover open grills. This setup creates positive pressure and will cut down on dust creeping in through the openings.

There are lots of theories on positive vs negative but generally, front/bottom/side intake and rear/top exhaust.

 

[tiny voices]

You want the top to be an exhaust not an intake.

 

[Luigin]

Thank you J_E_D_70,

For you, and for all that can't see the picture, this is what I have done:

-Case Front - 1 x 120mm fan intake (came with the case)
-Case Bottom - 2 openings for fans, one is used by the power supply, the adjacent one is left open (no fan installed)
-Case Rear - 1 x 120mm fan Exhaust
-Case Top - 2 openings for fans, the one closest to the rear of the case is left open (no fan installed), on the adjacent one I have installed a 120mm fan intake
- Case side panels, no opening that would allow installation of fans.

So far I have 2x120mm intake and 1x120mm exhaust, plus two openings left open (one on top, one on the bottom). I wonder if it's enough positive pressure or if it needs help by closing the unused openings. I would rather not install an intake in the bottom because I have the feeling it would pick up more dust, and take away air that is channeling for the power supply intake.

 

[Luigin]

Thank you tiny voices,
If I do that I would have 2 exhausts and 1 intake, therefore negative pressure...but you may be right, hot air will naturally move upwards, to pump air downwards could conflict with that?

 

[tiny voices]

All this positive negative blah blah blah. I have one intake (front) and two exhaust (top and rear), and I have never had dust in my case. I don't use filters or anything. Unless you let the computer sit for like a year and never clean it, you won't have a problem.