Yeah, 1C is fine. I have 1200mah 6V NiMH packs in my planes, in fact, three planes have a pair each. So, it's nice to have a charger that will get them up and ready in short order and the ICE does that job just fine.
For the transmitter, well, I have a large pack in that radio, so I charge that overnight and don't worry about it. If I run that battery pack down, it's time to go home..
CGr.