Dude, that was TEXTBOOK, bro. Awesome awesome awesome. Saw how easy that was? That's what most pickup is like. Very little in the way of fancy negs or microcalibration or CF. In fact, you could have dropped most of the bodyrocking and still done great.
What you experienced there is what awaits you after you approach. Sometimes girls WILL open you, but most of the time, you've got to sack up and get on it yourself. But now you're not so scared of the approach anymore, are you?
It's Saturday. Give her a call. It's best to establish yourself in the girl's life so you don't move down in the buffer. You don't have to Day2 her right away, but be in phone contact with her, at the very least, to establish some rapport.
As for when the Day2 should happen... when you're doing something cool and can take her with you, and you feel like getting laid.