Depends how you define 'performance boost'. A RAID0 setup will improve load times (Windows startup, level loads in games, etc.) but it will not improve system responsiveness or FPS in games.
In terms of the drives youve chosen, you will be fine with them.
well yea im mainly going for faster startups because im the type of guy who counts how many loading bars i get and well i want 3 haha but im getting 6 also all i do is play games and listen to music on my computer