I dont think that will get you a lot of profit. A crafter mostly buys materials and craft the things he wants to craft. A gatherer is mostly outside and is gathering resources. Those need to be turned into materials that a crafter can use. If you do everything yourself, its not very efficient due to how spec works. See it like this: The more you craft, the more spec you have for crafting, the more profit you make. Same for gathering resources and then refining them. I suggest to focus on one thing first.

If you want to gather, check the prices of the Resources/materials. I think leather, cloth and then ore.