Hi, I ride a 1993 Ross Professional Gran Tour 10 Speed. It's a Cro-Moly frame so it's very sturdy, but I'm worried that if I were to put panniers on to it, I'd be stressing the bike too much. I'm 6'2'' and 230 lbs and the bike fits well to my size so perhaps I'm just too worried.
It wouldn't be too much. My friend and I were wanting to ride east to west across Tennessee in 3 weeks doing 50 miles a day and zig-zagging to the major cities. We'll be hitting a big city every 5 days roughly so we won't be packing too heavy. ~3 biking outfits, a casual outfit, some bike repair stuff, camping equipment (I'm thinking separate hammocks instead of 1 tent) and some miscellaneous stuff. Trust me, I'll be traveling as light as possible because the first third of the state is the Smoky Mountains.
Perhaps if I put some wider tires on the bike would be better suited for my trek?