@Hong Zhu most likely schedule E, although we routinely review returns that are incorrect.

Or, a charging order may be granted.If you're going the umbrella insurance route, perhaps see if it will cover you for several things including just the routine slip and fall (like mold or earthquake).

Alternatively, DSCR ratios may not work out due to efforts to maximize the loan amount and avoid additional cash contributions. 

I would be curious to know how many fairly seasoned flippers routinely find 70% deals. 

BTW how did these deals work out for you?

However, I own a duplex and the DTI ratio for the next one just doesn't work out.

And then the rest are all seniors who wouldn’t ever even consider paying online and their checks are always on time every month because most have rented their whole lives and know the routine.

You can still have the conversation with them and let them know that you would like to increase the rent or sell the property, but that's probably not in your best interest. pumping a bunch of money into a duplex conversion doesn't sound ideal either, but I guess if the numbers work out it could be a good fit.

I plan on putting some elbow grease myself but mostly contracting the work out to allow the professionals to do what they do best. 

If the SF's homes work out as planned just 10 homes @ $600/mth in month 61 will be producing $6,000/mth cashflow with NO maintenance / landlord issues except evictions if tenant buyers don't pay. 50 homes $30,000/mth.