K2 T Nine Twister

Hi!

I am looking to purchase a K2 T Nine Twister. It has Shimano R600 STI shifters and brake levers and a Tiagra front derailleur and a 105 back derailleur. The frame is made of 6061 aluminum with carbon fiber seatstays and the fork is Kinesis carbon fiber.

I know that I want better than Sora parts, but I don't know too much.

If you have looked into this bike or know anything about the brand, please help! I'm looking to do my first tri next year and I want something that will hold up and keep me going for a few years.

Thanks!