I'm not entirely sure what you posted the link for but, seeing as you seemed prepaired to do so in that thread, I would reccomend you take back the danios and get a trio of platies instead (1 male, 2 females - you can learn how to sex them if you don't know already by looking at the pinned topic in the livebearer section).
You can use the platies to cycle the tank and then, in 6 weeks, choose some 3-5 fish of about 1-2" each to add to the tank.
At that time, you'll be open to all sorts of options - a small school of some kind of very small tetra or rasbora, guppies if you like, the betta you wanted (but not if you get guppies) and many more.
Just watch you don't over-stock and research each fish first. Maybe post another thread when the time comes and give us an idea of what fish you like so we can help you choose.