Advice for a RAID configuration in my new Mac Pro

I just got a brand new Mac Pro and I am looking to get the fastest possible render and encode times possible. Originally I bought an eSATA PCIe card but was not impressed with the transfer times. In another forum a user suggested that I setup a RAID5. What kind of drives and RAID cards do you recommend as pro videographers? I suppose I can use my 1TB G-Drive as cold storage for the captured video. Any ideas?

Tell me what you think of this potential setup then...
Hard Drive Bay 1
1TB Hard Drive from Apple that came with my Mac Pro
Hard Drive Bay 2
Cold Storage/Backup for Bay 3 & 4
Hard Drive Bay 3
RAID 0 with Bay 4
Hard Drive Bay 4
RAID 0 with Bay 3
I'm looking at getting three of these hard drives for the 3 empty hard drive bays...
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136284
What would you guys recommend I do with my 1TB G-Drive? It has USB, FireWire 400, FireWire 800, and eSATA.

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