Modelling the Microstructure of Steel
Have you been able to model option a within LS-Dyna yet? If you are new to the software, I would suggest trying to accomplish that before looking into altering the layering angle. You also might want to look into the different ways that you can accomplish this in LS-Dyna.
I'm linking a composite modeling .pdf which might be useful for your understanding. It is through the company Oasys so the architecture of the preprocessor will be shown through Primer not LS-Prepost, just FYI. But I think this image might help you understand how you can potentially model this without stacking elements as you mentioned.