Advice on case and psu 1400k system

Hey, i built a rig spec with my friends i got everything down but the case and I'm not sure about the psu

Processor Intel :

Intel Core i5 6600 3.3ghz 8MB Cache s1151 - Box Manufacturer site Item page This item is available in this branch Reset 1
CPU Cooler :

Noctua NH-U9B SE2 CPU Cooler Manufacturer site Item page This item is available in this branch Reset 1
Motherboards for Intel :

MSI H170A GAMING PRO LGA1151, Intel H170, DDR4, 3xPCI-E, DVI, HDMI Manufacturer site Item page This item is available in this branch Reset 1
Memory :

Corsair Vengeance LPX 2x8GB DDR4 2400Mhz CL16 Item page This item is available in this branch Reset 1
SODIMM :

Reset 0
VGA Cards :

MSI GTX980 Ti GAMING 6GB GDDR5 DVI HDMI 3xDP PCI-E Manufacturer site Item page This item is available in this branch Reset 1
Hard Disk :

Western Digital Caviar Blue WD10EZEX 1TB Sata III Manufacturer site Item page This item is available in this branch Reset 1
Solid-State Drives (SSD) :

Samsung 850 EVO Series MZ-75E250 250GB SSD SATA III Manufacturer site Item page This item is available in this branch Reset 1
Hard Disk For Laptop :

Reset 0
Optical Writer :

Asus DRW-24F1MT DVD±RW x24 Black Sata OEM Manufacturer site Item page This item is available in this branch Reset 1
Sound Card : Processor Intel :

Intel Core i7 6700 3.4Ghz 8MB Cache s1151 - Box Manufacturer site Item page This item is available in this branch Reset 1
CPU Cooler :

Noctua NH-U9B SE2 CPU Cooler Manufacturer site Item page This item is available in this branch Reset 1
Motherboards for Intel :

MSI H170A GAMING PRO LGA1151, Intel H170, DDR4, 3xPCI-E, DVI, HDMI Manufacturer site Item page This item is available in this branch Reset 1
Memory :

Corsair Vengeance LPX 2x8GB DDR4 2400Mhz CL16 Item page This item is available in this branch Reset 1
SODIMM :

Reset 0
VGA Cards :

MSI GTX980 Ti GAMING 6GB GDDR5 DVI HDMI 3xDP PCI-E Manufacturer site Item page This item is available in this branch Reset 1
Hard Disk :

Western Digital Caviar Blue WD10EZEX 1TB Sata III Manufacturer site Item page This item is available in this branch Reset 1
Solid-State Drives (SSD) :

Samsung 850 EVO Series MZ-75E250 250GB SSD SATA III Manufacturer site Item page This item is available in this branch Reset 1
Hard Disk For Laptop :


Reset 0
Power Supply :

SeaSonic 750W Active PFC Modular 80+ Gold G-750 PSU Manufacturer site Item page This item is available in this branch Reset 1
Case :



Reset 0
Net Device :

Reset 0
Power Supply :

SeaSonic 750W Active PFC Modular 80+ Gold G-750 PSU Manufacturer site Item page This item is available in this branch Reset 1
Case :

Sharkoon BW9000-W Black ATX Case No PSU

OR

Corsair caride series spec alpha

Or something you guys suggest

As for the psu is 750 overkill or is it a safe bet? I'm not going to oc.