Building a new computer

Im trying to build a gaming PC and I found these..Are they good?
Intel core i5-2500k
Motherboard: Gigabyte GA-Z77-D3H
Ram: Corsair venegace 8Gb 1600Mhz
Video card: Msi nvidia geforce 650 ti BOOST
Power supply: Corsair builder series 600W
and HDD 1TB
I will really appreciate it if you ansewr to this 🙂

O my gosh, you have made a terrible decision with the processor. You need to integrate Intel i7 4770 chip. Also consider to increase the HDD size and add RAID configuration together with the SSD as a system drive.

How good are you talking about? Be more specific.