Need some Help/Advice for server Upgrade.

I'm currently looking to upgrade my server to hold more hard drives. Right now my current case can only support 6 (never thought I'd use more than that). I kind of jumped the gun, and ordered some 5 in 3 drive bays from here:

http://www.moddiy.com/products/5%252din%252d3-Device-Module-Hard-Disk-Cage-SAS%7B47%7DSATA-Expander-Enclosure.html

I have yet to choose a case but I'm looking for a a full tower with 12x 5.25 bays. The issue is I am not certain what type of cables I will need to eventually connect 20 hdd to the motherboard. My current motherboard is this:

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131764

I'm guessing that I need some type of expansion card like this:

http://www.superbiiz.com/detail.php?name=AOC-SASMV8&title=Supermicro-AOC-SASLP-MV8-8-Port-SAS-SATA-Add-on-Card

The different cable types are confusing with SAS, Reverse Breakout Cables etc... Can anybody offer some suggestions or advice as to what cables and what cards I will need? Thank you!

Edit: Oops just noticed this is wrong forum for this. Sorry.

  I think this is the correct forum...

  The cages you bought look like they should work well.  They look easy to replace the drives, and they also have the ability to support a front mounted fan, which seems to cool drives better, and shold also make it easier to replace fans in the future.

  Personnaly I would probably go with the Antec 1200 case, I have two and love them.  The only issue you will have will be that the little tabs in the case will need to be smashed down flat to allow your new cages to fit in the case properly.  But this is true of MOST computer cases on the market today, at least that I am aware of.

  The AOC-SAS-MV8 is a good card, but the AOC-SAS2-MV8 is newer and faster, and usually about the same price.  http://www.newegg.com/Product/Product.aspx?Item=N82E16816101792  Either one will need SAS Breakout cables to "breakout" the mini-sas connections to the multiple SATA connectors.  You would need two cables per SAS-MV8, such as:

0.5 meter - http://www.newegg.com/Product/Product.aspx?Item=N82E16816132039

0.6 meter - http://www.newegg.com/Product/Product.aspx?Item=N82E16816132040

1.0 meter - http://www.newegg.com/Product/Product.aspx?Item=N82E16816132041

  You do NOT want the Reverse Breakout cables, which COMBINE SATA ports from a controller to connect to a mini-SAS connector on a backplane drive cage.

  Don't forget the fans if you have not already ordered them, or have in hand.  Sounds like it will be a nice upgrade!