Thanks, Mike.
With gigantic apologies, I mixed up my clock-directions for the Gaspé: I did my circuit
clockwise: Starting in Matapédia & heading N & E to Matane, then E along the N shore of the Gaspé, S round the tip, then W along the coast of Baie des Châleurs to finish up in Matapédia.
There was one tough climb near the NE tip of the peninsula, about 12-14% if memory serves. But, we encountered a 17% downhill in that area--meeting a couple of cyclists climbing, and I thought, "So glad I'm going
downhill!"
There was another fierce downhill towards Gaspé village; and then, further along the South Shore, there was a
24% downhill into Percé village. My buddy Jim & I ducked that, deciding to take the truck route instead; and happily, there weren't any trucks that day.
The winds can blow W-to-E in the morning, and then flip 180 degrees at midday...That happened to us on the N Shore. On the S shore, we did 140 kms one day with a tail wind, starting just W of Gaspé village. A day later, we did 60 kms in 6 hours, after the tailwind flipped overnight
I've not ridden the loop to Lac St-Jean, but I'm told it's splendid.
(One thing you might consider: have a listen to the songs of Gilles Vigneault, Québec's national poet/chanteur. Two I'd recommend are: "Mon pays" and "Gens de pays". For many of a certain generation, the latter is a national anthem. You can get the French lyrics easily enough; the English version works quite well for "Mon pays", less so for "Gens de pays". If people learn that you know Vigneault's songs, they'll be surprised and delighted.)
On the "Log-Driver's Waltz" trail, I understand it's a mix of quiet tarmac, gravel, some logging roads, and some single-track. My route will be secondary/tertiary tarmac & some gravel. Can send you a map when I get it done, if you're interested.
I've travelled part of the Rte Verte #1, along the Ottawa River E of Ottawa/Gatineau towards Papineauville & the Chateau Montebello. (Ottawa is on the Ontario side of the river.) It's a mix of quiet roads & bike paths, all well-marked. There are some stretches on Hwy 148, the original main road beside the river, but those all have well-surfaced wide shoulders. (Québec generally is far superior to Ontario in providing paved shoulders for cyclists. The Rte Verte people have done their work well.)
Cheers, John