Ok, we'll see how my time is running. If I have time, I'll head up the shore. Come to think of it, when we went through there in 2017, it was getting dark and raining so we missed a lot of the scenery after Wawa. I'll have to lay over in SSM or shortly thereafter.
I see that Google Maps shows the fastest time via 556 (gravel), with 17N through Wawa as 6 minutes longer, and 17E to 129 as the longer of the 3 routes by 9 minutes. I guess I'll take the shore route (17N) and avoid the gravel. I'll likely be up and down 129 during my visit so that will work out fine.
Thanks for the input.