Hi ElvenSkywalker83,
This is one of the few SW books I have on my bookshelf!* I enjoyed the story too and as it was a more self contained story I got into the book much easier. I know what you mean about the characters acted as a whole rather than being scattered all over the galaxy.
And yes those Ssi-Ruuk were a messed up species (especially that harvesting tech and stuff), Luke did well against them considering how beat up he was (physically and mentally).
Anyhow, glad you liked the book as much as I did, I mentioned the Ssi-Ruuk here on the forum a while ago and nobody seemed to know who/what I was talking about
* Update, I just recently finished Aaron Allston's "Conviction" and have acquired Chuck Wendig's "Aftermath" and the Last Jedi novelisation so I have some more reading to do.
point on it's way to you.