The Intense Expert XL is a GREAT starting race bike for anyone. It has pretty good parts on it, it's a great frame and it looks nice. That would fit you perfect. I'm the same height and about the same weight as you and I ride a 20" TT and it fits me perfect. Go to www.jrbicycles.com for racing stuff. It's better than Dan's for racing.

Intense Expert XL
Redline Proline Expert XL-$350
GT Powerseries Pro-$300
MCS Holeshot Expert-$289...little bit shorter TT not as recommended