AMD Athlon X2 340 (NA in India so far, good if you can get it else go for any cheap FM2 socket)

MSI FM2-A85XA-G43

Enenermax EPM1350EWT  (If you can get this, powers 3 290) otherwise 850w PSU per 2x 290  

4 x Sapphire AMD R9 290

4 x powered x16 to x1 risers

ADATA AS510S3-60GM-C 60GB

4GB (2x2) Mushkin Enhanced

Wireless TP Link 300mb USB adapter

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I'm building this currently, if you get the riser cables and the mobo somewhere please let me know.

PM me if you want to know any thing more. I'm not very far from Delhi