Through the LLC structure it is possible to take advantage of the existing mortgages modified first at 4,125% 22yers and 1%, yes one percent, for 40 years.

Why pay rent when your landlord gives you free housing, free maintenance team, free mortgage, free electricity, free water, free trash?

But then my cash flow won't be high, and when trying to get another property my DTI won't be great because 75% of the rent won't meet the mortgage.

If you did not do a "wrap mortgage" or "mirror mortgage" to help them create "notes receivable income", they may need a cosigner to have enough income to qualify for their next mortgage.

Think multi unit residential, commercial properties, or purchasing houses “subject to” existing mortgage.  

We're based in Tampa and, in addition to personally investing, I own a mortgage company that provides financing for tons of investors.

It seems that there is some risk associated even if it cash flows because our names will still be on the mortgage and affecting our DTI ratio.

Seller purchased for 310k, put 100k down and has a mortgage for 210k.

They perhaps can build cheaper than you can, finance cheaper, operate cheaper and to get it leased up, offer things like 1-2-3 months free rent. 

For those interested, a combination of mortgages with no “due on sale” clause, mortgage companies loose due diligence, and title insurers willingness to “turn a blind eye” to practices that wouldn’t pass scrutiny now, resulted in tactics like the “second mortgage crank” which not only allowed investors to purchase properties with no money out of pocket but allowed investors to actually walk away from closing with “cash in their pocket”.