RAID is actually Redundant array of inexpensive/independent disks.
RAID 0 is a misnomer due to the fact that there is no redundancy. With a great raid controller, you can get very good performance increases. I'd say go for it, as long as you use this array for projects, and not backups. Have another single drive backup of all your stuff, because as has been said, the failure rate is increased with raid-0