I highly recommend Cyndi Thomason and her company, bookskeep. I've been using her services for 18 months and she and her staff have taken my books from a total disaster to the heights of order and accuracy. What a relief! I now get to spend all the time I was struggling with my books on much more productive/profitable activities such as sourcing.
Cyndi is also a certified "Profit First" bookkeeper so she can help set up a complete Profit First system. It's rare to find someone who knows both Profit First and Amazon.