Product cost planning & cost object controlling

Hi All

We are using KMAT material type for configurable materials.

Product cost planning:

My question is , Can we save cost estimate for the Kmat materials?

( I am assuming I dont have to run CK40N for these materails , As I am not going to have accounting tab for Kmat materails. and I do not know which materails and operations to use in super Bom and Super routing)

Please let me know If the above statement is true.

Cost object controlling:

Can i use cost obect controlling by production order or PCC?

*I am assuming I will be ale to use only cost object controlling by sales order....But I have nt worked on this previously...If I have to use cost object controlling by sales order , can you guys give me a link or steps that helps me in configuring Cost object controlling by sales order*