Do you just jump out and say like "lets have a coffee?" , if so then fix that. First make it sound interesting, so that she'll go to that place even though she went there million times. Make her wonder about that place, say something like "there's this place that has really good food and no else place can cook like that, actually its been a long time since i went there and i've been thinking to go there lately. We should go there together." make it sound like you already go there even if she comes or not.if she comes thats wonderful and if she doesnt, fine cuz u r going there already.
http://www.youtube.com/watch?v=0OJGAWLHLBM
this funny scene will make you "get it".

i recommend you reading "dating to relating from a to z" my friend.
that book has a special section for exact your situation. hope this helps you.good luck.

TL;DR AT BOTTOM

when you get her number, seed the idea for hanging out in the first place, build some rapport over your phone for a day or two just so she feels like she is not talking or considering meeting a complete stranger, further advertise the idea of doing something together, make it sound appealing, on your date try to get her to your house, if you want to go for it or not is up to you and what you want, but having a good date that you both enjoyed is pretty important, and everyone enjoys sex, also kiss girls when you take them out on dates or they might think you don't really like them or something, and if you don't try to have sex with them if you get them back to your house that's ok, if she had fun on the date and doesn't start flaking on you after she will likely feel more comfortable being alone with you at your house and you can start a date at your house cooking for her or watching a movie or something, just know that there is always the possibility a girl will not want to go on another date past the 1st one

depending on the volume of girls you have to talk to (how many numbers you are playing with), you can just thin the herd by just asking them all to your house most will flake, but the ones that do come make for a really easy no stress date on you, you just try to sleep with them and if they are not down... then hey, you don't have to go anywhere or do anything, and it didn't cost you any money (and it would be really rare that a girl gets approached, is aware of your intentions, comes to your house alone, and is not up for sex)

TL:DR:
get her number by asking her out on a date, then build rapport sooner rather then later over text, you can even start texting her right after you get the number and just start a conversation with her, you will always get flakes but you can reduce them by making more of a strong impact/connection and making things more appealing for her