Any ap spent that doesn't net you jewels should always go to bl mats when possible. Anything else just seems like a waste of time to me. If none of the previous apply...no, the previous still apply, raids drop idea cores and every expert sp quest can net light crystals. You will ALWAYS want more mats even after fully breaking what you have unless you never plan to get more kami, ever. Personally I'm running three fire ssr kami so I'm not really sure I want more...is not the truth. I already want Svalog