Actually, Tiger's smaller footprint made it quite easy to fit everything on the 30 GB SSD, I just couldn't figure out what to use it for that Snow Leopard or Lion/Mountain Lion couldn't do better (except maybe being able to write/format disks in HFS Standard, but I could use my G4 with Leopard for that).
I tried running Mountain Lion on it too, and it worked wonderfully, but for that, it did start getting cramped, so I reverted to the 1 TB spinning disk drive, and it's plenty fast for now.
c