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If I directly hold rental properties under the 401k, and only use this account for operating activities, I need to be able to send out wires for property earnest money and down payments, and also provide the account number to my property manager if I need to make a contribution or if they give me monthly rental distributions.

I'm also trying to max out my 401k contribution so I can have that as  pre-tax money.

so The investors and I are splitting the 50% based on how much we contribute  

Building Equity: Part of your rent can contribute to the eventual purchase, helping you accumulate equity.Cons: Risk of Losing Money: If you decide not to buy at the end of the lease, you might lose the option fee and any rent premiums.

Remember, the notion of amassing wealth without investing is a dangerous myth perpetuated by self-proclaimed experts.

Actually, the combination of all that you mentioned contributes to it. 

In an urban market, level of finish and proximity to an attraction or location contribute significantly to demand for a specific home.

This produced a shortage of houses available to rent and contributed to the ability of investors to raise rents.

Remember, the notion of amassing wealth without investing is a dangerous myth perpetuated by self-proclaimed experts.