Is "parenting" a profitable niche for someone who's not a professional?

I am putting together an ebook on parenting, targeting the 'new parents'. I have come up with a pretty big list of common questions and problems that a lot of beginner parents encounter.

I plan on putting these questions and concerns into chapters and answering each one in great detail. I want to do the research and writing myself, then hire a copywriter for the sales page.

I don't plan on charging much for it, I basically want to use this as a list builder.

1. So for any marketers out there, is this a solid plan?

2. Is this niche profitable? Is anyone here actually making decent money in it?

3. I was told by someone that my book likely wouldn't sell if I were not a doctor or psychologist, as those are the people with popular books that I would be going up against. Is that true?

4. Also, what else could I add to this product to increase its value? I was thinking maybe a couple PLR reports on parenting, possibly even doing an interview with an established professional or author of a best seller. That alone I'm sure will be a big task.

Any advice would be appreciated.
Thanks