I'm at 23000, but I have today through sunday off from work, so I want to make it at least to 35000 (I average about 3000-5000 words/day on the days I write with a few that are much shorter)
Also - you don't have to start with the first line. You can start with a scene in the middle of the story that you already know you want to have happen and work forward or backward from there. Oftentimes I find that if I imagine a scene for the future, it is easier to backward plan than to start somewhere and say to myself "okay, what next?" or "How do I get things going?"
Maybe you won't have your first line until near the end, but that's okay. Even if you never get it this month, or don't have a good one by the end, that's okay, you can edit later as long as you get the word count.