Oh gosh yes, Stephen King, Michener, and Joyce Carol Oates could use some judicious editing! They're impervious to that imperative to "don't write the parts readers will skim" or skp (Elmore Leonard advice?). I've been trimming out and finally not even bothering to write the details I used to indulge in. It's liberating, on the one hand, but the results can be stark, on the other hand. Historical fiction is a genre where detail is expected and welcomed. You will have more than you can use, but you will also have an editor and publisher to help you make that painful decision on what to "amputate" (that's how it feels!).