Well, there is snow and then there is ....snow. Around here, we get about 48" on average, a mix of wet snow at the beginning and end of seasons and mostly dry stuff between. There are also days of above freezing where melt occurs. If we get a lot of the wet stuff, I'll get on a ladder and pull off the wet stuff with a roof rake. I have the typical roof rake enabled with a pair of small wheels so the edge of the rake doesn't contact the roof surface.
Beyond having a large amount of snow on the roof, there isn't anything wrong with your plan.