Timber companies and the feds swap these lands all the time in an effort to create large blocks of either gov land or private timber lands.

Everyone else is through tech, private equity, stocks, building operating companies, etc.At the end of the day, investing is investing.

We have hired   a property management company for all three rentals.

Consider getting a real estate license and joining a company that focuses on working with investors.

She and her husband have run a brokerage and property management company in Jax for years and they know all of the areas very well.

@Tori Roy A couple red flags I noticed with this company that you posted. 

Actually the IRS does not tell us what we can invest in, only what is disallowed (life insurance contracts and collectibles).Allowable investments for SDIRA investing include the following:Residential real estate, including: apartments, single family homes, and duplexesCommercial real estate Undeveloped or raw landREITs (Real Estate Investment Trusts)Real estate notes (mortgages and deeds of trusts)Promissory notes Private limited partnerships, limited liability companies, and C corporationsTax lien certificatesOil and gas investmentsPrivate stock offerings, private placementsJudgments/structured settlementsGold bullion Factoring investments

Don't solely rely on third-party management companies; instead, focus on building a solid asset management plan and, if needed, bring in experts or partners who excel in this field.

Other companies people use are SNSC, FCI, Landhome, Homekey and others.That would be your best bet.

New companies like Intel, Amazon, and Google are also investing here.