Unfortunately choices 1-3 just wouldn't be accepted due not being of high enough literary merit. Even if you managed to convince your teacher to let you do them the marker would view you dissertation as being "lesser" for using books which aren't literary enough. The books you've mentioned mostly fall under genre fiction (Sparks is Romance, Da Vinci Code a thriller, Northern Lights a children's book, and the mystery novels are, well, crime fiction.)
The separation of these books into genre fiction from literary fiction is due to the former focusing significantly more on plot, and usually being written more geared towards becoming the next bestseller - whereas, literary fiction focuses much more on literary devices, innovations and is much more a piece of art than a product (although it tends to end up both) - if you get what I mean. (McEwan should be acceptable - I find it odd your teacher won't allow a Man Booker prize winning author but hey-ho.)
One on Hamlet and Macbeth focusing on a fatal flaw would be completely acceptable, if a tad on the expected side of things. (Shakespeare is taught a lot for the literary study, and it won't be uncommon to find a question about a fatal flaw in your exam paper haha)
From "choices that change a persons life" - I gather you're interested in character development, and how a character develops through decisions they make. Therefore, I'd recommend perhaps looking into some Bildungsroman novels, Jane Eyre by Charlotte Bronte is fantastic, as well as Great Expectations by Charles Dickens. More modern books include things such as The Goldfinch by Donna Tartt, Black Swan Green by David Mitchell. And, 20th century novels include Catcher in the Rye by J.D Salinger, Native Son by Richard Wright etc etc
For crime fiction, you'd probably get a bit of leeway with the Sherlock Homes by Sir Arthur Conan Doyle - but I'd recommend looking into the sensation novels of the victorian era. Works by Wilkie Collins and Mary Elizabeth Braddon specifically.
A dissertation covering religion would have to be careful of not wandering into philosophical territories, remember it is the literary techniques that need to be focused on to gain a good mark - it's not what the author is saying, it's how they are saying it. I'd look into Graham Greene, and also John Steinbeck for religious novels. (not necessarily novels discussing a religious belief requiring lack of acknowledgement of fact)