RAM map

Is it semi-easy to swap characters via hex editing in ff6 advance? For example say I wanted to swap Leo's sprite for Edgar, would that be an intricate process or just finding the sprite pointers and swapping the numbers? No need to answer promptly or anything I know you are a very busy person! And also thanks again for going through the trouble of making an editor for the gba version, I have tried the editor out a little but I'm still troubleshooting through a hack of mine for the snes version atm. I intend to hack the gba version too once the ability to edit sprites is available. Editing the text is also useful in case I wanted to make Terra a male character like I did in my hack. Have a good one!