Also I would not have any work done until you have at least three professional estimates done.

Learn your market, and stay close to the skilled professionals, such as lawyers and title agents, who can save your bottom line.See the original at: https://www.biggerpockets.com/blog/newbie-wholesaling-faqs

They're the professionals at this sort of thing. 

I've tried reasearching this and have found it difficult to locate authentic reviews/suggestions from actual professionals in the business.

The better the class of the property, the better your chances for success will be whether you self manage or have it professionally managed. 

These are professionals with additional training and a stricter code of ethics.

I have worked with a qualified 1031 exchange professional out of Del Mar area on a few deals in San Diego I can refer you to.

It all has to do with attitude and approach.The IRS rules themselves are a pretty basic framework that is easy to operate within as long as you stop and ask questions of a qualified professional before taking action.BTW, there are about 4 dozen providers of self-directed plan services that outperform the company you mentioned. 

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Were starting Virtual assistance for real estate professionals Providing the administrative "brains" for a successful business If you're a contractor investor developer banker etc....