Help with $700 AUD General Use PC

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APPROXIMATE PURCHASE DATE: next week

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: General use (homework, internet, watching movies), light video editing with Adobe One Premiere
PARTS NOT REQUIRED: keyboard, mouse, speakers, monitor, OS

PREFERRED WEBSITE(S) FOR PARTS: http://www.msy.com.au/Parts/PARTS.pdf

COUNTRY OF ORIGIN: Australia

PARTS PREFERENCES: no preference, want reliable parts

OVERCLOCKING: No

MONITOR RESOLUTION: 1440x900

ADDITIONAL COMMENTS: I will be building a PC in Australia and I'll be buying parts from MSY off this list. http://www.msy.com.au/Parts/PARTS.pdf Prices already include tax. My budget is about $700. I'd like some comments/suggestions for changes for this rough draft I've made.
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CPU: AMD X4 9550 for $192 http://www.newegg.com/Product/Product.aspx?Item=N82E16819103674&cm_re=x4_955-_-19-103-674-_-Product

Motherboard: GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX AMD Motherboard for $98 http://www.newegg.com/Product/Product.aspx?Item=N82E16813128392&Tpk=770t

RAM: G. Skill 4gb (2x 2gb) ddr3 1333

PSU: Cooler Master Extreme Power+ 500 for $65

HDD: Seagate 500 gb for $59

Case: Antec 300 for $79

DVD: Samsung $38

Is there a better motherboard or psu on that site? She won't be gaming, so does she still need a dedicated graphics card? Also any other substitutions you would make? She also needs a network card. I don't know how to pick one of those out. Any help would be appreciated.