I'll look into NREIG, just to verify that shared-home is not covered.

Verifying last 2 years of rental history very important!

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

What the Sixers propose is nearly identical to Garden set up.

Verifying last 2 years of rental history very important!

Dissolving the LLC would require starting over with a new entity, which can be more time-consuming and may reset any business credit you've already established.To change the name, you can file an amendment with the Wyoming Secretary of State, which is straightforward and keeps the LLC intact while giving you a fresh identity.

Verifying last 2 years of rental history very important!

Before taking this on I’d verify with the historical society and building department what process you need to go through to renovate and if there are any requirements on what you’re allowed to do or not do. 

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

When you go into due diligence, request bank statements to verify actual income collected and expenses.