If you think you'll be doing some touring, get a touring bike. I'm the same height and weight and the bike I ride most frequently - for recreational rides, commuting and tours - is an old Trek 520. Sure, it's a little slower to get going and on the hills, but not that much. Besides, when I ride with others - maybe 10-20% of my miles - it's nice to have an excuse for being slow. I like the bike because it is comfortable, reliable and versatile.