ice charger/lipo ?
#2
If I remember correctly when you set your mah on the charger it is only a setting for safety. It will still charge your pack fully, but if the setting is lower than your actual pack it may stop charging to prevent damage. So you would want to set the charger to 300mah. It will not force 300mah into the pack. If you set it to 200mah, as a safety feature it will terminate at 200mah, just as an extra precaution in case the normal charging routine fails for whatever reason.
#5
Ah yes, I forgot about the percentage! That should work good.