Er, if you want to use i7, you need to buy an overclocked i7 4770K or i7 4790K. If you use i7 4770, it will be boring. You might as well use E3- 1230v3. Tell you what, I'll help you write down the 6000 yuan host configuration scheme corresponding to i7 4770K and E3-1230v3.
The top is i7 4770K, and the bottom is E3- 1230v3: