Fair points as applied to the OPs situation, I was more replying to the standalone statement you made about their not being a tax difference between the sole prop and LLC.
I did not state I "had" to hire a CPA firm. I chose to do so because I prefer to have experts in their field who can do things better than me do so, to my benefit. I own two companies and half of a third, so I focus my attention and energy on the portions of the business where I am most effective and have the most expertise.
No need to start throwing insults.