My recommendations:

1. Create lower and more various options for donating (i.e.. levels) on your crowd funding page.
2. Definitely do the video / website ASAP to get people to sense you are real.
3. Getting a flagship sponsor like one of the gambling sites as another member suggested. They can float you before you go.
4. Make the rewards on the crowd funding site something more guaranteed and tangible. Ie. for .05 you get a t-shirt or for .03 you get a sticker for .10 you get put on our thank you page on our website, etc.
5. Brand it. Put your face on it and give it a name, "Jenny's Super Fantastic BTC Voyage" or "Tim's Wild BTC Adventure" or something less corny.