Some advice on for a budget build plz

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budget around $400 excluding os n monitor
was plan to dual boot ubuntu with win 7 home which i alrdy own

what ive already decide on:
processor: celeron g55p
graphic card: gt 610
still looking on which motherboard to get
will be getting 8gb ram and a dvd drive too

i dont game too much on pc recent year
but i do hope that my pc could atleast run most of the game at low-mid setting



sry if my english is bad but

 

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PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Pentium G2020 2.9GHz Dual-Core Processor ($59.99 @ Microcenter)
Motherboard: ASRock B75M-DGS Micro ATX LGA1155 Motherboard ($57.98 @ Newegg)
Memory: Corsair 8GB (1 x 8GB) DDR3-1600 Memory ($34.99 @ Amazon)
Video Card: MSI Radeon HD 7770 GHz Edition 1GB Video Card ($96.99 @ Microcenter)
Case: NZXT Gamma Classic (Black) ATX Mid Tower Case ($34.21 @ Amazon)
Power Supply: Corsair Builder 430W 80 PLUS Bronze Certified ATX12V Power Supply ($24.99 @ Newegg)
Optical Drive: Samsung SH-224BB DVD/CD Writer ($16.98 @ Outlet PC)
Total: $371.13
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-03-01 08:43 EST-0500)