The Dolores does have some sections of Mellower water on it, but also some pretty big stuff, from Gateway down. You have the Dam Rapid, with about a 10’ drop to a small slot between wrap rocks, and it is extremely hard to scout do to vedgetation. State Line Rapids are about 3 miles long of class 3-4, with potential for wrapping, very long and shallow, would be a reallly bad swim. Snaggeltooth can be a difficult one up stream. Not a lot of eddys, and camps can be challenging, since everything grows in during the years it does not run.
The Dolores is awesome , and there are some easier sections, but also plenty of stuff that would be scary as shit and possibly dangerous for an intermediate boater, and some of it is kinda remote.