It’s a good package, but let me give few observations (in order of importance):
NIC/Internet LinkSys WUSB6300 IEEE 802.11ac - Wi-Fi Adapter USB - 867 Mbps
Are you sure you want a WiFi net adapter. Every special extra hardware in DAW is unneccessary IMO.
Dual Head Video AMD-ATI Radeon 5450 1GB fanless 1DVI, 1VGA, 1 HDMI
Isn’t onboard graphics enough? Then you must be a gamer. In that case at least Radeon 7750 fanless … or even something more powerful, but then you have no fanless option.
Power Supply: 500W ATX12V v2.3 80 PLUS BRONZE Certiied Active PFC Pwr Supply
As you are (based on your choises) aiming for low-noise PC, how about fanless PSU?
OS Programs Drive: Seagate 500G 16Meg Sata 600 1 yr warranty ST500DM002
How about 250G SSD? Boots faster, launches programs faster, less noise, not that much more expensive.
Quieting/Xtra Cooling: ADK-ADK Quiet Case fans (2) 8DB Noctua
Again … that option with acoustic treatment would make you PC even more quiet.
Processor: Intel- Core i5 4570 Haswell 3.2GHz Quad 6 meg cache NO HT
If you still have money left, get i7 4770