I am turning 30 this month and I currently ride a 2006 Trek Multitrack 7500 in the 15" size.
I love it and I originally fully set it up with the intention of light touring if I wanted to. But I am wanting a steel framed touring/road bike. I have a heart and lung condition and I am physically not very strong. If I cold bet to do 10-50 miles in a day I would be ecstatic. Honestly the existing stock gearing on my 7500 works really well for me if I have to do any climbing. I am also considering getting clip on aero bars and bar ends for the 7500. This would enable me to bend down and rest somewhat when I needed it for greater endurance on longer rides. Any thoughts on this would be helpful and much appreciated.
I have considered the Trek 520, Bianchi Volpe, the Windsor Tourist, Surly LHT, and the Fuji Touring. This will be used as a primary commuter, fun and light tourer.
The problem is I have always only ridden hybrids, mountain bikes, or cruisers. I have no idea how to relate what I already know to a new touring our road rig beyond the most basic stuff. Bicycle geometry, and even geometry of any kind, is beyond me.
Any idea on what kind of sizes I can ride comfortably? Any personal reviews of any of these bikes or other recommended models I might not even know about? Even the most general info would be helpful.