HI redblue!!!
The trick is to remember thrust is proportional to the square of speed whereas power is proportional to the cube of speed. Your best endurance speed conforms to the bottom of the bathtub curve of required power versus speed. Clearly you stay in the air longer if you use as little power as possible. (Provided that that speed is above the stall!). Looking at the same bathtub curve of required power versus speed or indeed of drag versus speed if you draw a line passing through the origin and tangent to the curve then you have the speed for maximum range which is also best glide slope speed. For aircraft where compressibility drag is negligible this occurs when parasite and induced drag are equal as you have discovered. But the speed for minimum power is 76% of the speed for maximum range because the two are in the ratio of 1/(3^0.25). I think your ground school can show you "Fuel Efficiency of Small Aircraft," which is AIAA Paper AIAA-80-1847 and was written by B H Carson.
Vancouver eh? How goes the Gastown Steam Clock and its steam whistle "chimes"?