You can't fit that CPU in that mobo!!!!
Also, no point getting a 7.1 sound card and put 2.0 speaker on it.
For gaming, W7 HP will be good enough.
Also, please format your part list next time (this time I did it for you). It was difficult to know what you are buying if you copy and paste what you had from newegg without any sort of format (big gaps between parts in the list and strings of numbers which we don't need).
Finally, welcome to the forum!