When is a good time to buy the crib?

So, I'm almost 24 weeks and I really just want to buy the crib now and get it set up. But literally everyone is telling me not to do it.

We have to get a minicrib because we only have one bedroom, and the reviews on all of the reasonably priced ones are shotty. So I want to buy one now, incase we need to return it and get a different one because it sucks or what have you.

Is 24-26 weeks too early??