I second the person who said go with "drop bars" for longer distances.
Trust me. You'll need em'. Good lord, you'll need em'. If you're just riding around town, you might not care but - longer distances, "Whoa, lordy!"
For that same reason, I'd go with Steel over Aluminum anyday. Road buzz over long distances will kill your fricking hands with Aluminum. Steel is like butter. Trust me on this one. It's worth it if you're going to be riding for any distance to go steel, in my opinion.
"Things look different from the seat of a bike carrying a sleeping bag with a cold beer tucked inside." ~Jim Malusa
2009 Trek 520-Brooks B-17 Special in Antique Brown
2010 Surly Long Haul Trucker-Brooks B-17 Standard in Black
1983 Fuji Espree Single Speed-Brooks B17 British Racing Green