First things first.... I doubt you did any damage. I'd check the airbox hose with the plug (right-side near exhaust collector) and drain any oil out of there. If you still saw a little room at the top of the window it really wasn't that overfilled.
Next.... either check the oil level with the engine stone cold or FULL operating temperature - which this time of year can take 10 - 15 miles of riding. Starting an engine and leaving it run for a "few minutes" will give you a false reading every time.
I agree with your "1/8" below "F" on the center stand when cold - at full operating temperature it will likely read dead on "F".
No worries... just ride the snot out of it!!!