The N1100 LCD draws about 250uA in normal mode (300uA at high refresh speed like 10Hz) and 0.2uA in power off mode. Not sure what the average MCU consumption would be with all the optimizations, but I think it would be higher.
However night rides would really suck the battery as the backlight needs around 15mA.

You can pretty much rule out OLED for such applications as they are not visible at all in the sun, let alone the power consumption.

And no, polling it at a few MHz would not miss any sensor signal but it would be tricky to also update the LCD in this time.