Ask yourself.... what is the ball that is the biggest trouble ball... the 10. 15 has to go first. The 13 isn't easy to get position on, but with good speed control, not impossible.
15 stop, 11 is key ball for shape and can be played 3 different ways. Would probably try to go in between 3/13 and error on hitting the 3. If I hit the 3 i have easy shot on 13 and still have 14. In an ideal world I don't hit either and get good on 14. Either angle on 14 gets me to 10 ball. Then stop on 10ball or just pop off rail and use 13 to get onto 8ball.
This is how I would go as well. As Danny D states, you want to take the path of less snookerdom. The 13 is a bit blocked by the 5 and the 3 if playing shape from any ball other than the 11 and the 15 is blocked by the 10 and the 8 so the best paths are those that minimize the chance of getting behind those balls or having to run into them when playing position for the next one.
this is the way i would do it as above
I'm not going to pretend this is straightforward. But I'll give you what thoughts would go through my head: