Cutting It Short: Figure out the experience you want your reader to have. Test your creativity in both forms. Pick the one that best fits your storyline.
Every reader experiences books a different way depending on the narration. It’s not really difficult to figure out what you want your reader to feel. What is difficult is figuring out if you can give your reader all the information they will need with the narration they are following
Third Party Narrative – This is the easiest form of narration to write in. If any kind of writing it is easy, that is.
This isn’t to say there aren’t setbacks. In the matter of wanting your reader to feel the same feelings as one of your characters deeper than just saying how they are feeling, you have to go into a thought monologue. Which in all intents and purposes, really isn’t that bad.
I say it’s the easiest, because a third party narrative is an all-knowing party. So they are able to give definitive remarks about each, and every character.
Character Narration – This one is difficult because you are limiting the knowledge of your reader to the knowledge of whichever character is narrating the book. i.e. When making remarks about any other characters thoughts or actions, you have to caveat that as a guess from the narrator themselves.
My advice is to try both. Take a chapter, and see which one lends itself to developing your storyline. I myself wrote my first book in the form of main character narration, but ended up changing it to a third party because I wasn’t able to be as clear as I was wanting.
As always, I’m open to banter.