@NuSkooler:
Good, I got the impression that some of the information in that thread may have been blown out of proportion or just plain FUD.
I think at this point I've pretty much settled on "Option 1" above. I don't plan on having much disk I/O so unless I get faulty parts, it should be solid for quite some time.
Yes, a modern 30GB SSD should last a long time on a standard pfSense install. That's an early SandForce drive, which should be fine. I would, however, make sure to update the firmware before you start. If I recall correctly, that era of SandForce reserved some space for wear leveling and helped with performance, which is good (more recent versions are releasing that space back to the user for more capacity, since you don't exactly need that much space for your purpose, that extra wear leveling slack can help with longevity, faster is a side bonus.)