Opinions for this built!!Please tell me what you think about it

There is something that is not balanced properly:
-You have selected i5 4570(non k) version, and the motherboard is Z87 chipset. There is no point in using Z87 chipset on non K processor, because you cant overclock it, unless you are planing to buy in the future K processor. If not, go with motherboards with chipsets of B85 or H87
-Better get 2X4 GB RAM, so you can use double channel and get best performance from the memory modules.
-Why do you have 2 HDD's, one 500GB and one 1TB, better get 128 GB SSD for better boot and usage of applications , software and os, and use 1TB for storage.
-Last one, what is your budget, so the community here can help you in selecting the best parts for your setup.
 
Change some parts for better performance:
Processor to i5 4670K
Ram to 2x4 GB
Video Card into Geforce GTX 660 TI
500 GB HDD into 128 GB SSD
Change the motherboard into something around 100$. I don't have time to suggest one.
Even though the cost may increase but it will be very much useful.
 


First of all thank you for your answer!
I made a mistake, ram is 4gbx2 in order to use dual channel, I choose wrong part to pcpartpicker.
I try to make a pc for a friend; the budget is max 900 euro. I selected those parts
Because 4570 in games has no great difference with 4670k,that's why I invested to the motherboard if he needs to upgrade to 4670k (and over clock) or 4770k in the future.
Didn't find a decent ssd for 70-90 euro, also the size of the ssds at that price was very small. If i was putting a better one, I was out of budget or I had to cut from other parts like psu or case, but those parts u don't upgrade them that often, thats why I choose a caviar black for OS and the blue for storage.
As for the GPU I think is quite good for the price and considering the budget limitations.
Tell me what u think. All the suggestions, will be appreciated please consider the max limit of 900 euro!!!
 


900 eur in which country?
 
Greece and will buy it with credit card. The problem is that he will buy it from a specific store with no much option in ssd ,the best they have right now is this :http://www.newegg.com/Product/Product.aspx?Item=N82E16820171645
for 70 euro
 


I know my friend,they just don't have it! I know that samsung pro are good too put they don't have them either,infact they don't have any decent ssd!!