I read 11/22/63. I found it to be an entertaining book.
However, at 880 pages, the book is overwritten.
(Yes, The Stand (1980) was also long, but The Stand was a much better book, IMO.)
As for the casting of James Franco in the lead role of Jake Epping: No complaints, really. Jake Epping is one of King's blander protagonists, and Franco should work as well as anyone.