Approached 5 girls at a nearby collage got one girl's number....

Me: (right when we cross paths). I saw you and I think you're beautiful so I wanted to meet you.

Her: Thank you!

Me: What are you up to right now

Her: I just got out of class, and on my way to work in 30 min.

Me: Ok, I want to invite you to come to Starbucks with me right now,

but I see you're in a rush so we'll do something later. My phone is dead, just text me with your name

Her: Ok, what's your number?

Me: (I tell her my number)

Her: (she sends me a text with her name) Ok, I sent it to you

Me: Ok, it's nice meeting you

Her: Nice meeting you too

My question is, what do I text her next? I see so much different information on RP forums etc. that are contradictory and it gets confusing I just want something to lead me on the straight and narrow. Here's what I was thinking

Send her a text tomorrow saying "hey I'm heading to Starbucks at X O'clock you should come through..." It's simple, brief

and gets to the point.

I've learned that I should wait until next day to text her and try to get her out the same day (to keep

momentum going).

Is this sound advice? I've also heard texting the first day you meet a girl is too needy.

Thanks.