best IFR configurations/power settings for Cessna TR182

I am trying to determine the best IFR configurations/power settings for

my Cessna TR182. For example:
APPROACH LEVEL GEAR UP: MP 17 in, RPM 2300, IAS 100, VS 0, Mix Rich,
Carb Heat OFF, Flaps UP, Cowl flaps closed
seems to work but I would like to hear from other 182 pilots:
What approach level config/power setting do you use? Should Carb Heat
be ON so monitoring carb temp not so important on final approach
course? Do you put gear down before or at (as I was taught) FAF/point?

Do you use 10 degrees of flaps in this configuration? If you put gear

down at FAF, what other adjustments are needed to get VS = -500 at 100
KIAS? (I have to put Carb Heat ON and/or pull power back a bit to 16
in)
thanks
Greg