Extended for the reasons given, but mostly at clays.
The extra weight at the muzzle works for clay targets, but in the field a lighter front means a quicker move to the target if it jinks.
In your shoes, get the extended.
At clays, I shoot around 80& also, but I rarely change chokes. Usually, it's IC in the bottom LM top. Sometimes I go up an increment and shoot LM/M.
That's with a 7/8 oz reload. For 1 1/8 oz fodder, I could ease up and go Cyl/ IC for many shots.