My goal is to be filthy rich and set my family up for generations. maybe I should pay the mortgages faster?

Reason why is because FDIC Bankers "Do Not" charge points on traditional programs like primary homes, standard investment purchase and refinance, Second home/vacation homes.Lenders, Brokers all charge points to meet their Loan officer compensation plan (commission).

Because the reality is that one deal won't make you rich, but the continuous growth you get by doing deals and building your skills, network, and expertise will create the foundation to get you there! 

If we get the impression they aren't committed or if they are looking for a "get rich quick" scheme, we typically don't accept them in the community. 

If not, you could always maintain 2 separate IRA accounts, one self-directed for private lending, and then another for your traditional investing.

As a result, competing against seasoned investors in the multifamily space can be challenging, especially for newcomers or those with less capital to deploy.On the other hand, single-family homes (SFH) are typically the go-to choice for primary homebuyers, who are not always as cash-rich as investors but can still secure financing through conventional loans.

I don’t know whether or not investment in Detroit residential property will make you rich.  

Some syndicators have so many fees (acquisition, construction management, asset management, capital event, disposition) the syndicator is going to get rich even if the deal produces zero return for its investors.

This allows you to access funds while keeping your existing mortgages intact.Second Mortgage: Explore lenders who offer second-position loans on investment properties, though rates will be higher.Cash-Out HELOC : While traditional banks often restrict HELOCs on non-owner-occupied properties, some portfolio or private lenders may offer HELOCs for investors.With $15-20K in liquid funds, look for deals where you can negotiate terms:Seller Financing: Negotiate lower down payments or interest-only periods.Subject-To Financing: Assume the seller’s existing mortgage while covering the down payment.Lease-to-Own: Lock in the purchase price while using rental income to build equity.

These properties appeal to students and low-income renters, especially if traditional housing is limited.