SSDs make great OS/program drives, but they can be pretty weak for CS5, especially at the price/generation point of Intel's X25-V series. Regarding why are SSDs poor for CS5, it is an issue with slow performance in writing.
Put everything on your HD except "media cache DB" (CS5 projects, media, media cache, output, etc.) and you should be fine. BTW, you have a strong CPU and lots of RAM, so your hardware would be much better balanced if you were to use a total of 4 7200 RPM SATA drives: 2 in RAID 0 for projects and media; 2 in RAID 0 for media cache and render outputs. Check out the "hardware" forum for LOTs of hardware discussion.
Thank you Jim,
I should say I haven't researched the HDD/SSD thoroughly enough before installing. I will study your advice.
Thanks a lot!