I have made the TOW trip 3 time in a motorhome, always with a tow. If I am not too old, and healthy enough, will make it again next year.
My opinion on people that give advise on road conditions:
1] Three drivers, driving the same rig configuration, driving the same road, with a 15 minute separation between vehicles. Each are ask what they though of the road condition.
2 ] First one said it was the best road he has driven in years.
3] The second said it was OK but there were a few bad bumps, rough in a few places, and the road was too narrow.
4] The third one said it was the worst roads he had ever driven on in his life.
My point. If you don't know the driving history of the driver you are listening to, you have no point of reference to determine how good or bad a road is.
Tens of thousands of vehicles are driven over the roads in this section of Canada and Alaska each year. They are not that bad.
My observation, and none of you know me, if you have driven the highways in Louisiana, I don't find any roads in Canada or Alaska to be any worse than those.