net... the other things you list
are often required in a book proposal... but you'll need to check each publisher's guidelines to see which elements are to be included in that package...
as for the synopsis vs outline question, for non-fiction, a chapter outline is usually expected, along with a brief overview of what the book is about, in the cover [or query] letter... a chapter outline is sort of an expanded table of contents, with a 1-3 sentence description of what each chapter contains...
hope this helps to unconfuse you... for more detailed info on book proposals, you can email me and i'll forward a guide...
love and hugs, maia
maia3maia@hotmail.com