This may help as well as what Pitluvs mentioned:
Step by step cycling
I would set her up in a 1gal if you have it until the tank is ready. Also, it is best to introduce the females in all at once, otherwise the one will claim the whole tank as her territory and it just a headache lol. So keep her happy and comfy and when you can, go and get the rest! Or if you can only get so many at a time due to money, then you can introduce 3-4 at a time. So you'd just have to go get 2 or 3 more to add in together. Good luck! I want a sorority but space is lacking here, so I'm busying myself with my boys and making a never ending wish list =P