Grindelwald was one of my favorite GT2 tracks, and recently I had an idea of remaking it for AC.. thanksfully you already did it! :)
I drove some laps on it.. there are already good meshes, and looks really promising!
The flow is nice, even if I would slightly make less elevation changes. But it really depends on how far you are on the development tho.
5 Stars for the effort you are making on it! keep it up !
About Red Rock I have the same problem with time, but lets hope somebody can make it for AC someday. Cheers for your track I enjoyed to driving in there!