Mining rig opinions?

[vvilliamm]

hoping to keep it around 1k~

So far what im stuck at is buying 4x 270 or 3x 270x what you guys think? for price performance
i also have a powercolor 7850 for 120ar which i can return and put the money for x4 270 opinions? is my psu good to handle all of this?

r9 270x - 230
r9 270 - 200

ASUS M5A97 R2.0 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS
Model #:M5A97 R2.0

XFX R9-270X-CDBC Radeon R9 270X 2GB 256-Bit GDDR5 PCI Express 3.0 HDCP Ready CrossFireX Support Video Card

CORSAIR HX Series HX850 850W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC

AMD Sempron 145 Sargas 2.8GHz Socket AM3 45W Single-Core Desktop Processor SDX145HBGMBOX

SanDisk ReadyCache SDSSDRC-032G-G26 2.5" 32GB SATA III for Windows 7 and Windows 8 -based PCs

G.SKILL Ripjaws Series 4GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9S-4GBRL

^ should i get the 1 stick or the 2x2?for a bit cheaper.

Where can i get some pci-express powered risers that are reliable? should i get all powered risers?

if anyone has a neweggaccount

https://secure.newegg.com/WishList/MySavedWishDetail.aspx?ID=32174768