Torn Shirt Offroad Tri.. Howell MI

Is anyone familiar with this race? I am looking into doing my first tri and since I'm primarily a MTN biker this looked like a good match..

Race specifics..

1/2 mile swim
15 mile mtn bike ride
6 mile trail run.

Right now I am in OK shape (at least by my standards)
5K Time: 27min
MTN bike about once a week
Best time at Lakeshore Park (10 mile loop. This only helps if you know the trail): 58:23
Don't really swim that much..


The race was in June of this year so I am assuming that it will be in June in 2007. Is this to much to handle for my first Tri? Is 10 months a reasonable amount of time to train for a race like this?

Thanks for you input!!!!!!