Ah yes the good ol' LC 30pin chips, 8meg sticks are a bit costly ($8-$16) but are easy to find, and just make sure the refresh rate is correct. As for other sizes, they had 256k, 512k, 1mb, 2mb, 4mb, 8mb, and 16mb. These are easy to find eBay has tons of lots of these available, at cheap prices, and its worth the risk.
Good luck... And congrats on not trashing the LCII