Add 2 different products in attributes, in an bundled product

I have search multiple sites and looking for a plugin.

My idea is that I want to link specific products to an bundled product, from the attribute the user choose.

I will try to explain:

? I have product 1A, 1B and 1C
? I have product 2A, 2B and 2C
? I have product 3 (one product)

Together, those product combines a single product adapted to a different model: Product 4.

I want to publish products 1A, 1B, 1C, 2A, 2B, 2C, and product 3 seperately. This is where the stock is updated.

On the storefront I only want to display Product 4:
It will make it simple for the user to get the right combination, by selecting an attribute. So on Product 4, the user’s choice of attribute collects the different products from 1 and 2 and adds product 3.
The reason I want to make the attribute collect from other published products is so you won′t need to set aside stock to have an available bundle. If product 1A is sold out, the attribute can′t be chosen.

I can only seem to find plugins that let you bundle certain products, but you need to set aside stock to have this bundled product available. This seems very inaffective and not automated, when talking about many variations from 1 and 2.
It also seem to only have the opportunity to have multiple selections (attribute) if you want to add more products. So if I put on a product, the user would need to chose two times: Product 1, Product 2.

Basically, all I want is:
Product 4 display – one selection (attribute), that links Product 1 option, Product 2 option and Product 3.
Easy, and simple for the backend when you just fill up the stock in those products selected – and not set aside stock for a bundle.

Does anyone have a tips for a plugin? Or put me in the right direction of what I need to be searching for?
Or do I need a developer to help me out?

The main function here would be to link and collect several products in an attribute. In the storefront the user would only see one product that fits the model selected. In the backend we would see what kind of product 1, what kind of product 2 to pick, alongside product 3.