Some different ways to set up the back kick
The step through is what Cung Le uses almost every time, very little telegraphing with that one. You can also step the back leg to your lead leg and throw the side kick.
I usually tend to use left inside leg kick to spinning back. It works everytime.
Asiancuddly, yes - thats a great set up for spinning backfist, spinning back kick and spinning elbow!! Nice!