I plan on doing solo rides 10 - 30 miles past town limits - cow country, no gas stations, etc. and w/ limited cell phone. Carry a chain tool or do road bike chains not break? Also, recommended mini tool w/ or w/out chain tool. I only have a small seat bag (Spec EMT), the rest goes in my jersey. Aslo I have an old chain tool back from early 90's, will it work on a new ultegra ten speed chain?