Quebec to Saguenay one day itinerary possible?

Quebec -> Montmorency Falls -> Sanctuaire Sainte-Anne-de-Beaupré -> Baie-Saint-Paul -> La Malbaie -> Saguenay

Not sure if this is possible in one day and would appreciate any insights. I anticipate 9pm arrival in Saguenay but not sure if thats realistic.

I plan on spending 1 hour at each location. Its more of a "something to check out on the way to Saguenay" Open to omitting visits to any of these sights or adjusting time spent at each sight.

Departing Quebec at 12pm. Google maps shows this trip without stopping will take 4hours.

I do not plan on dining at any cafe or restaurants because I plan on having a big breakfast.

So to summarize, Google shows 4hr commute non stop and if I do spend 1 hour at each location (Montmorency Falls -> Sanctuaire Sainte-Anne-de-Beaupré -> Baie-Saint-Paul -> La Malbaie) this would mean I have an 8 hour day and i'm adding 1 more hour as a buffer so I anticipate arrival in Sagunay at 9pm. I'll probably pick up a bucket from PFK and call it a night.

Question: After La Malbaie google maps shows I should go back on road 138 and up to 381 but I could also stay on 138 and go up 170. The difference in drive time is less than 10 minutes according to google. Which option should I take? I assume it will almost be dark so hoping to find the easiest/safest route to Saguenay.

Thank you All!