Urgent because my king on this account literally dies tomorrow

Okay so, I bred my year and half long project lion last November and have been RMRing them ever since. I was initially planning on just replacing the king I have on this account buuut I am a bit attached. However, I've also had her for almost 2 years so maybe its time for a refresh

My main dilemma is, do I replace the king I poured a couple thousand gb into (and have had for ages) or do I just replace the king on my side account who I care less about? I would love for my main account to have a new face, but im just no so sure now. I am planning on trying to RMA another rosette on her so that would help a bit I think.

Additional info: I want both of my kings to be 100% BO. And right now, both are not. I was recently going to replace my side account's king with a different lion but I put that on hold for now. Which is another part of the problem

My heir for reference (Needs more work and opacity changes, she's cute under all that I promise lol), my current king, and side king.