I have awareness that this is above my head. 

Keep your cash on hand by stabilizing and refinancing your cash out, BRRR method.If this inflation keeps heading up then your cash will be worth less and less every day.  

For instance, if you want to put down 10%, will you typically find that another 5% is thrown on by most lenders because it is an investment property?

But it may be regional.Where I've lived, the only time the landlord pays is for special properties (rented fully furnished, for instance) and where the landlord lacks a way to meter something for each unit (most often water).

Understanding that everyone needed more time to make this happen, I just sort of stuck my head in the sand and crossed my fingers hoping for the best and did not bother to even try and evict.

I was simply trying to wrap my head around the entire process of registering my AirBnB/Vrbo adequately, according to the State's new STR guidelines. https://www.airbnb.com/help/ar...  

Anyway, your head is in the right place.

Thanks for the heads up.

I've never head of anything that allows for access to equity with only a 10% equity position.

This is an armchair idea, meaning in your head it probably sounds reasonable, but to seasoned investors it sounds ridiculous, especially to try in Brooklyn.