Unfortunately, even though my DTI and credit score was good, the underwriting was not so good because I had gone through a debt consolidation program not too long ago which, as some may know, requires you to stop payment on debt for a period of time.

I’m not sure the insurance requirements that I’m requesting from borrowers are appropriate.  

Does anyone have any knowledge on whether cordless blinds are required by law, or a helpful "suggestion"?

If the water bill is $100 a month, increase the price by 20% (or whatever you decide is fair) to compensate you for the time required to split and bill and to cover additional use when tenants squander the utility.

Does anyone have guidance as well regarding licensing required to do this?

What I would do is have something in writing as part of the offer that my bid is based on the systems in working order (or some estimated life span left)We will spend $30k to inspect them all and if any are deemed required to be replaced we will credit X at closing.

Standard financing would require 20%-25% down and that's hard enough! 

However, there are seasoning requirements for both Fannie Mae and DSCR refinances, unless you opt for delayed financing.

She wanted to know what ventilation was required and if there was an exception to the rule.

That's another reason to require regular cleanings and maintenance.