Ditch the drop bars. Convert to upright & free yourself from trying to keep up with the 20mph crowd. Start enjoying the scenery when you ride. I've done numerous drop bar to upright conversions. Three things need to match in order for shifting to be precise. Shifter lever increments must match number of cogs on cassette. And generally speaking, shifter lever manufacturer must match RD mfg. I don't know much about 10 speed drivetrains. But you should have no problems finding 7, 8, or 9 trigger shifters that will work on upright bars. Just change out the rear cassette. If RD is Shimano, you're good to go.