Hey there! I just completed my first century with TNT . . they WILL get you to the finish line and you will have an awesome time at the Honolulu Century!! I just did the century in Lake Tahoe on June 3rd ("America's Most Beautiful Bike Ride"). . what an awesome experience!! I have a trek and love it ..think you'll be happy with the bike you've chosen (they are well made). As for helmets, I just got a Bell Sweep and I love it too-very comfortable and I wear a low pony tail with no problems. Good luck and GO TEAM !!!

Blessings,
Susan