The best way to get 10 hours 182 is to go and fly a 182 around for 10 hours. 210, 206 and 205 hours count for APF regs, new (apf) rules now require you to do a written test and check flight to fly jumpers. I'm unsure about what the casa position is there regarding what constitutes 10 hours on type for charter whether or not it's the same deal with a bit of 210 time.
The transition from low wing to high wing is not so bad, first two or three landings will feel weird without the low wing in your peripheral vision. 182 Has heavyish controls and a higher dash than other types.