Sager laptop, to raid or not to raid

I am definitely buying this laptop
http://www.powernotebooks.com/product.php?itemId=699
Sager NP9880 FORCE.

ill upgrade it with
-WUXGA
-3.6ghz
-wireless+bluetooth combo
But:

-Is RAID the way to go? (RAID0)
-If it is, is it better to raid two 80gb SATA at 5400rpm or two 60gb ultra ATA at 7200rpm?
-if not, whats better, 80gb SATA 5400, 80gb ultra ATA 5400, 60gb ultra ATA 7200rpm

Will i benefit much from the speed gained with raid, enough to forget about the safety issue if one hard drive fails.

Comparing two raided 5400 harddrives and one at 7200, which one is faster and which one heats more?

Also, if i take only one hard, ill save some money so is the quadro card worth upgrading, i never worked on a quadro before.

will be using this laptop mainly for Max and some cad utility, and most of the time i should have access to a power outlet.