I decided around 7PM on Thursday evening. About 36 hours before jumptime.
The 5 seconds before I jumped and the first 10 seconds of freefall were the most terrifying of my entire life. But I have to say that the 45 seconds to a minute of freefall were the most exhilirating. So, I guess I will take the horrifying to get the exhilirating. Although I don't think I would need to do it again, I'm extremely happy that I did it. It was a once in a lifetime opportunity.