World's toughest mudder

I know this isnt a triathlon but....

There is a race/obstacle course called "Tough mudder", it's about ~15km long and full of obstacles. At the end of the year, the top 5% of finishers from all the Tough Mudder races can compete in the "World's Toughest Mudder", it's a 24hr race, where you perform as many laps as you can, after every lap you do have the option of warming up in your tent (It's in December in NJ) and eating/resting.

They also have "wildcard" spots, where they perform a random draw for qualifying spots, well it so happens I won one of these spots. I'm quite excited to attempt this, but having only ever run a couple races (10k run, 5k run, Sprint Triathlon, 5k warrior dash) I'm not sure if it's realistic for me to sign up and attempt to compete in this race in 5 months, just looking for some thoughts and opinions, it's a one time chance, and I fear I'll regret not doing it, I'm committed to the training, and like that it gives me something big to aim for.

This is the promo for it: http://www.youtube.com/watch?v=xFIQjZfIAWM/>
P.S. It's an american race, I posted here since I'm from Ontario