Well it seems like most responses are leaning toward taking the Sirrus with the triple crank. Man I still kind of want to use the Ironman just because. Which I know makes no sense. The triple will definitely help my big ass up the hills. Thanks for the comments fellas, even those that say they would never do such a ride. I just want to say I did it once. I said that for STP and ended up riding it a second time. Who knows, maybe STP on my Ironman this summer?