Need advice for new gaming build

Hey guys. I've beed saving up a bit of money which id like to spend on my first build. I have $850 to spend and i hope that that will incluse everything i need including a monitor and operating system. I plan on gaming as well as some FL studio and other music editing software.

It would be really great if someone could help me out:) Thanks in advance.

is four dollars over ok?


http://pcpartpicker.com/p/JQm0

 

note: it doesn't have a optical drive, most people have an old computer laying around- temporarily pull its optical so you can install the OS, then remove and return it afterward.

-Or-
buy one for an extra $15-17.