You can run the fogging oil as long you want, the more the better. Usually I start the motor, give it a little bit of throttle and spray down the carbs until the motor stalls. Then I fire it up and do it again until it stalls, then pop the spark plugs and drop some mystery oil down the cylinders with a little bump of the motor following.
As for the antifreeze, you dont need much, as soon as you see pink (or whatever color you have) coming out, that means its gone through.
This is usually my general sequence...
Add stabillizer to fuel
Flush motor on the hose for a few minutes
Flush with antifreeze through the system, and dump some down the lines after.
Fog motor the way I described in the beginning.
Pull the battery, tighten everything, lube everything up nice, and spray everything down with a silicone spray. Crack the seats and put her away.