I don't have any system in mind but really anything that will streamline production and manufacturing.

One of the biggest problems usually in this sort of business is inventory management and getting from the inventory to final product to the client, this is where you money is.

I realize this is a bit generic, but you are missing a lot of details here (and that's fine, in your place I would do the same until the deal is final).

From the sound of it though, this is a business ripe for improvement, almost anything you'll touch with good spirit and intentions will likely benefit.