Excellent suggestions, exactly what I was hoping to get, especially from the last 4 posts (starting with Maddmaxx). I had not considered the effect of lighter wheels and frame geometry. I’ll weigh my Bianchi’s wheels and see how much it would cost to upgrade to lighter wheels. I’ll visit my lbs for a second, longer test ride to evaluate the effect of frame geometry and road feel over at least 20-30 miles.

Not to add confusion to the original goal of getting a lighter, more responsive bike, I’m entertaining the idea of changing my Bianchi into a touring bike with panniers. This would allow for a more balanced stable: a touring bike and a light, quick road bike.