Want to update cpu and memory on a GA-990FXA-UD3 (I live in Ecuador)

My motherboard is the Gigabyte GA-990FXA-UD3
I just sold my phenom ii x4 955 BE, the coolermaster TX3 I had on it, and some corsair value memory. I only have my laptop for the time being and want to buy a cpu and memory as soon as possible.

I'm from Ecuador and there is no piledriver cpu's here yet, but I buy things on Amazon and have them fowarded here (tried buying things on Newegg and never got it to work :c )

I was wondering if anyone has advice for buying the  FX-8350 over the FX-8320 and what kind of memory I should get for it 1600 1866 2133. In my country I can only find 1333memory and I want to get the most out of my rig.

Almost forgot to say my budget would be 300USD for the parts ( 400USD is the most I can bring without getting charged 32% tax, I learned this the hard way hahahahaha)

Thank you very much for your help