I contacted a title company to officially record the sale, but they are requiring 3 separate closings (and tons of extra fees) because there will be 3 liens/private mortgages recorded (one is the original mortgage that I want to reassign since the interest rate was very low; the second will be held by my son to my daughter for his portion of the equity in the home; and the third is the difference which will be between my daughter and my other LLC). 

All I know is I'm just looking for strategy help/expertise and not for a company to manage my investments/funds who preferably charges a flat fee vs a % of my assets.

You do not need a LLC for every property unless they are large multifamily assets in different locationsFor example worked with a company that had 5 buildings and 1300 units under one LLC.

Plenty of other smaller companies and projects going on.At $240K you can probably buy cash property around Sherman Denison area. 

It seems most of the bigger roofing companies make all their money on insurance jobs charging $400-$500 a square which would be ridiculous for an investor to pay. 

If your CPA firm is not experienced in them, I would look for a company that specializes in 1031.

One thing I'm struck by is no DST company so far has been able to provide their track record.

We did not use a realtor in this case and had a title company act as the intermediary.

If we built one of these spec homes (owned as our company), and then did a 1031 exchange under our personal names, is that viable because the parties are two separate tax entities?

The city has an annual output of $132 billion and a heavy concentration of Fortune 500 companies, making it a top economic metro.