FFVI: Divergent Paths

I have no experience modding this particular game so forgive my ignorance if this is a silly question, but can this be edited by an editor like ff6 tools without any weird consequences?

I am wanting to mess with a few different things like items, who can equip what, some esper stuff and potentially replacing a couple of character sprites (though I am guessing that will be need to be done by another editor).

Thank you in advance for any answers you may have!

You can't use an editing tool per se, but you should be able to make changes to the Rom by downloading Windhex and the supporting FF3 tables.  FF3 Battle table is the one you'd want to make use of.

DL and open Windhex -> Open a patched version of FF3 Divergent Paths (under the file menu)-> Open FF3 Battle.tbl (again under the file menu), Open the search menu and click on the Search Text option.

You can search for the name of any item, character, spell, etc. in the game.  It'll all be displayed to the right of the hex grid, in the table, and in plain English.