Post solo, I was taken through an extensive series of 40° flap slow flight, stalls and incipient spins and yes, climbs (not very much).
If you plan to use 40 flap, familiarize yourself with them at altitude.
With practice you could reduce to 30 flap for a go around, but there are traps with the electric flap switch and I suspect there may differences between models in how that switch behaves that can result in your being in a different flap setting than what you intended
My last instructor in 172s had a habit of telling me I had just lost the engine after I pulled carb heat on downwind. 40 flap works very nicely in getting rid of excess altitude once the field is made (excess altitude being a more workable problem than insufficient altitude)
