Done deal as soon as she gets in. !!

The only direct lender I know of that's willing to take a second position on a DSCR loan is Velocity Mortgage. https://www.velocitymortgage.com/The rates on these products are crazy though.  

It seems there are so many factors that may sway that number (based on exact location/amenities) that it is hard to get an accurate estimate to analyze the deals. 

You are not crazy :) cap rates on storage got pretty crazy in the last decade as the space has become crowded and money was cheap, starting to see some reversal of that now, but its tough to find deals at a true 10 cap (10 x NOI or NOI / .10).

has anyone ever raised their skin in the game for a deal? 

What made you interested in investing in this type of deal?

They can provide you with insights and access to deals that might not be widely advertised.

:)  Did you get into larger multifamiliesI have business partners who are exploring larger deals, so I expect that I will eventually be involved in them.

These two things directly impact gross rents and cash flow. 

To attract a long-term partner, emphasize the mutual benefits and build trust through transparency in the deal structure, profit expectations, and exit strategy.