http://ffhacktics.com/smf/index.php?topic=4868.0 (ignore the talk about the Squire being unsuitable to edit, that's a mistake)
In short, you don't want to edit anything about the Chemist's skillset at all. It's hardcoded (meaning that instead of relying entirely on what FFTPatcher can set up with the various menus like most of the Jobs, it's got unique, specific coding to perform a unique, specific function) to work differently than a regular job.
While the hardcoding isn't as bad as it is for Mime or Onion Knight, the only change you could possibly make to the Chemist skillset would be to change what the items themselves do, or how much JP the skills cost.
But if you want to unlock Monk before Chemist (or just earlier than Monk is normally unlocked) you can definitely do that - with the Job Level tab in the patcher.
In short, you don't want to edit anything about the Chemist's skillset at all. It's hardcoded (meaning that instead of relying entirely on what FFTPatcher can set up with the various menus like most of the Jobs, it's got unique, specific coding to perform a unique, specific function) to work differently than a regular job.
While the hardcoding isn't as bad as it is for Mime or Onion Knight, the only change you could possibly make to the Chemist skillset would be to change what the items themselves do, or how much JP the skills cost.
But if you want to unlock Monk before Chemist (or just earlier than Monk is normally unlocked) you can definitely do that - with the Job Level tab in the patcher.