I think Smurf is the best answer. Buy a spool or 2 and use it anywhere you are not absolutely sure you are done. My wife has changed her mind on the master swite lighting plan a couple times but it was trivial to change. My audio/video/data is in a bit of flux now too. Just be sure to strap it tight. If it "bellies" in a curve you have a harder time pushing wire through.
