Asus P5E Deluxe flashed to Rampage formula, RAID setup?

Hello,
I currently have a P5E Deluxe flashed to Rampage Formula BIOS and am looking at setting up RAID with this config.
2 questions.

1. Will the flash to Rampage Formula interfere at all with setting up the RAID?

2. I'm currently looking at using 2 Samsung Spinpoint F1's, but have a few considerations.
Do the lower capacity Spinpoints still have 3 platters? I Have read that they basically make them all as 1TB drives and then limit the lower capacity models. Is this true?
Also, can you RAID 3 drives in a RAID 0, or does it have to be an even number of drives?