We as a firm have investors working with us who have rental properties all over the US big and small.Finding a real estate-focused tax professional and one who can help with advisory and grow with you would be my suggestion to focus your efforts on finding.

While I acknowledge my individual capabilities, I firmly believe that working within a team environment opens up limitless possibilities.

Before building that last company I took a 5 year break and moved into internet marketing where I started a marketing firm that mostly did social media ad buying (I was the guy that sold out growthcon for Grant Cardone in 2019). 

Louis area, I firmly believe it's never too early to embark on your real estate journey.

Many brokerage firms say they offer self-directed accounts, but when you ask about real estate, they will not hold that type of asset.

There are firms like @Kory Reynolds who likely have syndicators on their client list who could give more insight.

Private equity firms contact me daily about a company I have listed, and most of them are just time wasters. 

Anyone know any law firm that can assist in this matter?

These firms are known for being relatively inexpensive and reliable.

Most cost segregation firms will provide a free cost/benefit analysis quote to help you determine if the tax benefits from the study will outweigh the costs.