Been researching this, can't figure it out.

Basically, one whole category in my store is a product that will be dropshipped by the manufacturer, a flat $10 for shipping any amount ordered in that category, and can only be shipped to the US. I know I need to use Flat Rate Shipping and US zone.

BUT, all other categories I have here in stock and will be shipping myself based on weight, using USPS. I will ship internationally for these items, so more zones.

I've seen lots on using and cloning different shipping modules for different zones, but not for different categories.

If a customer orders a mixture of products from the dropship category and from the other categories, I will need their cart to itemize the $10 flat fee plus the additional shipping by weight (I think it would be cool if these could show on separate lines if possible).

Anyone have any experience with this? Thanks!