Final Fantasy Hacktics

I'm comfortable with both RAD and UWEntries so I should be able to complete my plan. I believe the only variable in my way at this moment is number of available sprite slots. As it stands I'm trying to add 16 or so sprites to my patch. Which means I need to consolidate as much as possible. I'm using Celia & Lede unused and all of the undead knights, archers, mages etc, and all of those extra squire slots too. Is there anything I need to know about any of these sprites?

More importantly Can I use those weird graphical sprite sheets in shishi slot 5C, 5D,  and 5E? They aren't used for any weird effects or anything are they?

The undead humans are used in the Lucavi batlles... The glitchy ones and the squires are never used and should be safe.

Putting (the original?) Cellia/Lede in your party on console via Gameshark would crash the game, but I have no idea what could cause this. For all I know, UWEntries might fix the issue. The unused ones are safe as far as I know.

Thanks for the help.