New Build for Disabled Veteran - Urgent Buying May 10

Thanks for taking time to review. Putting together a pc for dad (disabled vet).

Approximate Purchase Date: May 10
Budget Range: 300-400 Before Rebate - Low as possible while leaving room for a CPU upgrade down the road.
System Usage from Most to Least Important: Web Surfing, Youtube, Workstation, HD Movies
Parts Required: Only Need PSU, Mboard, CPU, Memory, HD
Preferred Website(s) for Parts: Newegg
Country: USA
Parts Preferences: Indifferent AMD/Intel, 24" monitor will be used
Overclocking: No
SLI or Crossfire: No
Monitor Resolution: 1920x1080
Additional Comments: Looking to build an inexpensive pc for my parents. Reliability would be the number one concern.

Samsung by Seagate Spinpoint F3 HD502HJ/ST500DM005 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive 79.99

Rosewill Green Series RG530-S12 530W Continuous @40°C, 80 PLUS Certified, Single 12V Rail, Active PFC 49.99

Patriot Gamer 2 Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model PGD38G1600ELK 42.99

BIOSTAR TZ77B LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS Item #: N82E16813138352 99.99

Intel Pentium G630 Sandy Bridge 2.7GHz LGA 1155 65W Dual-Core Desktop Processor Intel HD Graphics BX80623G630 74.99

OR

Intel Core i3-2120 Sandy Bridge 3.3GHz LGA 1155 65W Dual-Core Desktop Processor Intel HD Graphics 2000 BX80623I32120 124.99