Improvements of my Cheap game Rig

Hi Tek Syndikate im new here and i need help! I just bought my cheap gamerig and Here's a List on what i got.

Proc: AMD Llano A8-3870k 3.0Ghz Black Ed.

Mobo: Asus A75m LE

RAM: Gskil Ripjaws 8Gx1 1600Mhz / Question : should i change this to 4gx2 1866Mhz? will i feel the difference?

HDD: 2Tb Seagate(this will be a storage after i get SSD) / Q : what 120/128Gb sata3 SSD should you recomend?

GPU: Sapphire HD 6670 1Gb GDDR5 Hypermemory (crosfires w/ the apu) / Q : Will the Higher descreet card  be better or maybe just be bottlenecked by the low end apu?

PSU: CoolerMaster 600W silentpro

Cooling: DeepCool Gamaxx 300

Case: Emaxx Rebel / Q: Which fan brand should i buy? 

Monitor: 22" Samsung LED

 - Please help me decide on which is lacking or should i change to max out this build so i can play new games.

 - Give me Tips please! thanks! 

I hope you don't intend on playing BF3 at 1080p, I am a bit confused have your already bought it or are you wanting to buy it

if you haven't already got it I would not get the llano, could you tell me your budget and what country you live in and do you intend on overclocking the CPU

 

I cannot gaurantee I can get back to this in a reasonable time, I have a life outside of TS (a quiet complicated one) and I don't really have the time to get to All of these threads, but if I don't I'm sure some one capable witll take my place

sorry for lack of details. i already bought it and i do not plang to overclock just to max out this crosfire llano build. no buget cap, im in the philippines. thanks!