Since the mod starts you with Dodge Roll, you'll end up having duplicates when the game actually gives it to you. I removed it and also changed the ability slot assignments back one value (If you don't, then all the abilities after Lucky Strike will be missing). You don't really need Dodge Roll for the short amount of time that you don't have it.
Replace the ability codes in the pnach with this:
Make sure it's in the same location as your ISOMaker and ISO. It should detect it automatically but if you want to be safe, you can drag the patch file onto the ISOMaker exe file. Any additional things you want to add, like mods, should be put into a folder called "import" where the additional files will be added after the patch.
I found these neat codes for Kingdom Hearts (USA) that allow 60fps, while toggling off in all possible instances where the game starts to get buggy (e.g. voices cutting each other off in cutscenes, fmv, subtitles disappearing too quickly, red and green trinities). I have not been able to fine such specific codes for the Final Mix version. I decided maybe I should take it upon myself to make the codes myself, but I know nothing about making PS2 cheat codes. I just copy/paste them onto a .pnach file and run.
*Please notify me if I'm being stupid and the codes I'm seeking already exist and copy/paste them into your reply*
Where do I start?
What tools will I need?
What are the basics of understanding these codes?