Given those (non GCA dynamics) then why not go to Tree Tops, Boyne, or one those lodges with Arnold Palmer and Fazio courses..?...
While you’re at it, why go to Michigan in May at all?
Total crap shoot weather-wise. I’ve played there in May when it’s 30s and 40s F and raw...and I’m talking US Memorail Day late May...
I get that the drive from TO is doable, but still 7-8+ hours.
Sure, you can run into some good weather. But maybe think about it especially since you’ve already played those courses and some seem indifferent....
Go to Sand Valley.
Or, play Kingsley, Loop, Arcadia South then try to sneak on Crystal Downs...