I need to build a new case, and I need dimensions.

[LizardWizardGaming]

I'm planning on building my own case from scratch. How big should it be if it has to hold:
ASUS P8B75-MLX Motherboard
MSI GeForce GTX 960 2GB PCI-Express 3.0 Gaming
(2) Seagate Barracuda 3.5 inch 2TB 7200 RPM 64MB 6GB/S Internal SATA Drives
Intel Core i5-3570k CPU 3.4GHz Processor
Samsung 24x SATA DVD Writer
(2) 4GB DDR3 Corsair RAM Sticks
CiT 500W 12cm Silent Fan Dual Rail Power Supply

Here is a link to the case I have now.
http://amzn.to/1PcfSYP

I can hold everything in this one (Except the GPU) so I need to build a new case to house all of this, I have an idea of what it’s gonna look like but I need to figure out dimensions.

 

[LizardWizardGaming]

P.S. The case is similar, there is two things different about it.