Need help around building a new pc

[Thealchemistx]

Alright,I have a lot of questions,i have asked so much people and yet no one has honestly recommended what i really need.

These are the current components i have chosen (mainly because they are at a reasonable price in my country):

CPU: intel core i5 4670K
CPU Cooler:Raijintek EreBoss
Video card:MSI GeForce GTX780 TF OC, 3GB DDR5
Memory:KINGSTON 8GB 1600MHz DDR3 CL10 DIMM HyperX FURY Blue Series
Motherboard:ASRock Z87 KILLER or ASRock Z87 EXTREME4
Storage: WD Black 1TB SATA 3
Case:Thermaltake Commander MS-I USB3.0x1
Power Supply:Thermaltake Smart 730W

I would like to know if this currently works and additional suggestions about the motherboard,power supply(and how much power do I actually need),and perhaps a different cpu cooler (considering the price of them should be close to the price of the current components).
Then i am uncertain would i get better performance if I got an amd cpu (would it actually work with and nvidia gpu?) for the same price.
I am planning to use the pc mainly for gaming,and although i am going for a single monitor i would still prefer putting a gtx 780 inside.

 

[Thealchemistx]

Just one more question would it be worth putting in a 30gb ssd woth like 450Mb/sec or to wait untill i can buy a 120 gb faster
one?

 

[jaraldo]

Just wait for 120gb. Unless you had some HTPC to put the 30ssd in afterwards it's really a waste as you won't be able to fit much in it for desktop usage. You might only have 10-15 GB left after windows install and all your programs.

I know you can almost buy 120gb for the price of many 60gb here at the moment. So the lower you go the more overpriced it is.