Great at opening, mid-game and developing interest, but transitioning to number close, kiss close, or getting her to the dance floor is a pain. I can never get the transition done smoothly! Any ideas that can smoothen such transitions, especially if I've narrowed down to my target (from a set consisting of 2 or 3- after fully engaging the set of course) ?

Dude, I believe that there is no 'smooth transitioning'. My subjective opinion is that it depends on your frame, state of mind (what you believe in) and sub communication. I just feel great and say, 'You seem cool. Give me your digits and I might think of something.'

I can't speak for the other two (my k-close ratio is pathetic), but number closes are really easy. The problem is that you are in your head thinking of ways to smoothly transition instead of being there in the moment with her, which is natural and happens to me sometimes, mostly with extremely hot women. So I know the feeling.

But number closes are no sweat. Here's what I do - try to get her talking and comfortable and laughing. Right after she laughs one time, just take your phone out and give it to her. You don't even have to say anything, she knows what you mean - cannot remember a time that this didn't work. Now keep in mind I work mostly at night in bars and quasi-clubs and I make sure we are VERY close, usually with my arm around her. Day game I usually am not touching them or quite as close and I don't ask for her number, it's more like, "You should give me your number because blah blah blah." I do much better when I do not ask. What you say isn't that important otherwise though, so be silly if you want, "Give me your digits and we'll go club some baby seals tomorrow."