Either way you’’ want to add another option that’s basically “Product with both A and B” that cost 2300.
If you want to do it with Velo you’ll have to make your own selection screen. Easiest way would probably be adding a list of checkboxes, then according to which are checked. Then use
https://www.wix.com/velo/reference/wix-stores/cart/addproducts
before opening cart with