Personally, I mix strength, flexibility and dancing. I would get rather bored otherwise! Mostly what I want is to dance, so I start off with about 30 minutes of that. I move into tough moves that I want to practice (such as spins I haven't quite perfected, getting myself used to being up on the pole, etc.), and then do strength training with my weights and stuff, and then I end with stretching! And that's a full day's workout for me.
You can always vary it, though. I mean, if I'm just not feelin' the dancing, then I'll move right along into the more "workout" like stuff, weights and things, and just do a shorter day, or if I'm sore, then I'll focus more on lighter dancing, less harder moves, a lot less weights and more flexibility. And a really nice, long, hot shower. :)