Finishing Fics... Finally

I found this community yesterday, as it was advertised in another community I was subscribed to. Let me tell ya, this place is exactly what I was looking for. There's been a plot bunny that has been bothering me since September! I've already technically written thousands of words about it just discussing it online with friends. Unfortunately when it comes to actually cracking down and writing, I have about 3500 words, 1000 of which are my unfinished outline. A story like this demands at least 30,000 words from me, and I have never written anything that long. The story doesn't even rely much on world-building, most of it is character driven and rom-com, I just need to find the motivation and confidence to complete it. I would've abandoned this fic idea long ago if it would just leave me alone! But no, it just keeps coming back to me. I would really like to turn this idea into the full-length fic it deserves.