Go for it. THis is my second year. It sounds like the same one I'm doing. Miami to Key Largo. Last year was rough, but only because I didn't train for it. I started working weekends and only started 2 weeks before and I only rode 1 hour per ride. Still I was able to finish it. Or rather survive it. The second day was murder only cause the saddle I had back then sucked so my rear end was really sore. BUt this time I'm actually training with my Team and I have a really comfortable saddle. Don't be intimidated. It's so fun. I plan on doing it every year. It's so well organized that it's amazing.