Creating an Alchemist, help please!, It's kind of complicated... Options

[wikkedkid]

So I want to create an alchemist.

My idea is when he uses a skill, for example "make potion" it will open up a list of the potions he has learned how to make
and he can choose to create one. If he doesn't have the right items it does nothing or shows a dialogue box explaining the
failure to make it. If he does there is some percentage of chance that it succeeds and an item is made.

The alchemist, at different times in the game will learn how to make different items from other characters in the form of skills,
and when he has the right items, can use those skills.

These item making skills will reduce some amount of sp, and the ingredients used to make said item.

If this impossible, let me know. Otherwise I would really love the chance to use this idea!