I am working on a similar bike setup. I found a Chrom molly framed "comfort" bike on Craigslist for $125.00 I plan to change the bottom bracket(it's toast), seat and seatpost and tires. When I first started riding the bike I thought it was slow and was thinking of going back to a road bike until I took it on gravel etc. I think I'll stick with the SC30 for now. I noticed that you have racing handlebars. Do you prefer them over Mt. bike type? I like the more upright sitting position. Although it is slower with wind drag, Ihave less neck aches.