So, I’ve finally finished the last chapter:

-I removed the mention of the Solo twins in the opening scene;
-I decided to keep the line “you will train all my children” as it can be interpreted in a more general way (like in a “one day, if I have more children, you will train all of them” sense);
-I had to remove the last scene (too many mentions of the Solo twins and the “third child”);

I also added two scenes (trimmed and blended together) from “Empire’s End” #1, using them as an open-ending epilogue of the story. The scene foreshadows the Emperor’s return in Episode IX.
It provides an explanation of why Palpatine disappeared and stayed in the shadow during the next twenty years, setting up the events of TROS.
As he explains, Luke destroyed all his best clones, therefore he was forced to take one that was genetically unstable and is now in decay. He also says he will journey to his “place of power” which, in the context of the Sequel Trilogy, can be interpreted as Exegol.

I’ve also updated the opening thread.
The project is now complete and if anybody is interested, they can PM me to get the link 😃

May the force be with you!