Hi Tyler,
I understand that you are looking for an Amazon expert who can help you optimize the product you have recently listed, so that it can be visible across multiple categories and also winning the buy box. Also, you would like to create a Amazon Promotion Campaign to optimize the item.
I have earlier worked with lot of Amazon Sellers on a daily basis for more than 2 years. I have gained immense knowledge about the Seller Central and Amazon Systems which can be a great value add to your organization.
With my expertise, I can help you list your items in a way where in it will show up under multiple categories. However, winning the Buy box depends on the number of sales and the prices offered by you. Even if you are a single seller you will need few sales to win the buy box.
I will also create a Amazon Promotion for you from your seller account as per your requirement.
Let me know if you have any questions.
Thanks,
Tarun