Missables?

[Raian the Fallen]

I'm running through the game a second time, and I'm aiming for 100% completion - excluding Excalibur II.

Since each game has their share of missables, are there any significant items I can miss? I want to have every item, but I'd hate to use a walkthrough and spoil the game's challenge.

I saw a missables FAQ on GameFAQs, but it wasn't very elaborate - it just listed the items. It didn't list their locations, which is kind of a bother.

Also, how do I go about maxing everyone's stats? I don't recall seeing any stat up items anywhere throughout the game.

Thanks in advance.