Grim, jimmy3dilta, Jama, Marrs, notaek, Cryptocables - Thanks for the advice! It was really helpful. I have spent some time and 'built' a rig which i would think(hope) it would support 6 GPUS?  Do you think it will work?

Mobo:
3x http://microcenter.com/product/401768/Z77A-G45_Socket_1155_ATX_Motherboard

CPU:
3x http://microcenter.com/product/408967/Celeron_G1610_26GHz_LGA_1155_Boxed_Processor

RAM:
1.5x http://microcenter.com/product/401550/Hyper_X_Red_8GB_DDR3-1600_(PC3-12800)_CL_9_Desktop_Memory_Kit_(Two_4GB_Memory_Modules)

( I would use 4GB per rig)

PSU:
Option #1: 6x http://www.microcenter.com/product/404598/SuperNOVA_NEX750B_750_Watt_ATX_12V_Power_Supply


GPU(already being shipped):
18x http://www.newegg.com/Product/Product.aspx?Item=N82E16814202032


PCI E Extenders:
9x Powered ones: http://www.cryptocables.com/
9x Non powered ones: from ebay.

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1) Will my MOBO handle 6 GPUS? Anyone has this particular board? or at least something close to it? Would you recommend it?
2) Do i really need CPU for LTC mining? will this celeron work?
3) 4GB ram per rig should be plenty?
4) I would use 2 PSU's per rig - will that work?, UNLESS YOU KNOW A BETTER(CHEAPER) ALTERNATIVE?
4.1) Do I need ADD2PSU to connect those two PSU's? http://www.add2psu.com/store/
5) will 3 powered extenders per board is  enough?
5.1) Should i get powered 1x extenders or 16x(powered)?

Thank yous