I bought some components but need help picking the rest

[attila1905]

So far I bought every single item on this list below except the GPU shown. Thats the one I will buy next.
Other than that, I have my eyes on this case. what you guys think?
http://www.amazon.com/Corsair-Obsidian-Series-Computer-CC650DW-1/dp/B004UE1W9K
I like simple, professional designs. Pcpartpicker site doesnt show any incompatibility isues but shoudl I be worried about anythign with this case? Or go for the bigger one in this link?
http://www.amazon.com/Corsair-Obsidian-Performance-Tower-CC-9011035-WW/dp/B00EB6O4N8
Also, which cooling unit would be ideal for this build and should I buy any additional items like fans or any other components a newbie wouldnt know to buy?

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor ($329.99 @ SuperBiiz)
Motherboard: Asus Maximus VI Extreme ATX LGA1150 Motherboard ($373.98 @ SuperBiiz)
Storage: Samsung 840 EVO 250GB 2.5" Solid State Disk ($139.99 @ Amazon)
Video Card: Asus GeForce GTX 780 Ti 3GB Video Card ($715.99 @ SuperBiiz)
Power Supply: Rosewill Capstone 650W 80+ Gold Certified ATX Power Supply ($76.50 @ Newegg)
Monitor: Asus VG248QE 144Hz 24.0" Monitor ($259.99 @ NCIX US)
Keyboard: Logitech K800 Wireless Slim Keyboard ($69.99 @ Amazon)
Mouse: Logitech Performance Wireless Laser Mouse ($77.58 @ Amazon)
Total: $2030.03
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-05 00:44 EDT-0400)

 

[AMD Radeon]

for cooling, go for Corsair H105
Corsair 650D is very good choice

 

[Dark Lord of Tech]

I own the 750D and the room in it is unbelievable , will fit any watercooling components you choose.

 

[attila1905]

for cooling, go for Corsair H105
Corsair 650D is very good choice

does my power supply look weak for the build?
I know it will definitely be weak if I want to throw in another GPU .
I probably will have to upgrade that when that time comes.
is 650 watt good for this build?

 

[Dark Lord of Tech]

Your power supply looks perfect for the specs.

 

[attila1905]

I own the 750D and the room in it is unbelievable , will fit any watercooling components you choose.

I think i shoudl be okay with the 650D though right?
I mean if you say 750 is unbelievably roomy, no reason why 650 shouldn't have enough room.

 

[attila1905]

Your power supply looks perfect for the specs.

even with the second GPU. lets say in a year?

 

[AMD Radeon]

^ no, 650W is perfect for gtx 780.... single gpu

you need XFX 850W GOLD to run SLI