I keep a close watch on this heart of mine // I keep my eyes wide open all the time // I keep the ends out for the tie that binds // Because you're mine, I walk the line
I'm embarrassed at how long that took me to figure out.
Some more help for anyone who needs it:
All the relevant clues are in this chapter (not previous ones).
It has nothing to do with letters, only numbers.
Two of the clues are one way to the answer, and the other two are a different way - but then again, you need both ways to know what order the numbers go in.
After I solved it, I realized all I'd have had to do was multiply.
5 
82 
2 
Different, yet still the same. 