parent & child products ?

My client builds and supplies garden buildings, which consist of a core item of various sizes and a number of additional ‘bespoke’ options.
I have added options such as size and colour to the cart object on previous projects, but may need a different route, as the options can be product specific and the client would like the cart display to appear as follows, so that each option is itemised, as it would be in a quotation.

pictured is an example...

I thought about having the ‘child options’ as products in their own right, associating them with the parent product via a parentproductid field in the products table.
The objective would be, on the product detail page, for a customer to choose the product by size, in this case a ‘10x8 basic workshop’ and have all of the child products listed with their options.
The add to cart button would then add both the main product and its associated child products (if selected) into the cart on submission of the form.

I guess I have 2 questions.

Is there a better way to go about this ?
If not, is it possible / desirable to have 2 separate add to cart server behaviors running in series, (ie for the above example, I imagine I would have a simple add to cart behaviour for the parent item, followed by add to cart from recordset for the other items.
Grateful for any suggestions

the child products would need to be added as separate products using add to cart behaviors in series, the problem with this will come if the parent product is deleted, there isn't really a to force the child products to be deleted as well. that would require hand coding to accomplish that we could help with in a premiere support appointment.

I don't think the logic to prevent the parent being deleted is too difficult,, i'll worry about that bit later.

Are you saying I need to add the parent item first, then the child items singly ?

  Are you saying I need to add the parent item first, then the child items singly ?  

yes, that is correct.

As a user experience, I don't think that works me..

I want the customer to be able to add the item with desired options to the cart in one hit.

I think I need to investigate the options route further and see what I can do with the cart display.

Sorry, i meant that you could have multiple add to cart behaviors trigger at the same tome to add the parent product and selected child products in one go.

use a recordset to lookup the selected products, and use the eCart get contents from recordset behavior to add them.

okay.

I think I will have a go at both options and see how it works out.