In either case, you should verify that you are eligible to transfer the funds from your existing retirement account (e.g. if the funds are in your current employer 401k, you will likely not be able to transfer until you quit your job).Considerations in Setting up a Solo 401k to invest in real estate:1.

You'll want to do your own due diligence to verify the ARV is accurate.When viewing the physical property, document the entire condition of the property.

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

Do you verify their income?

I'm trying to verify if this is correct and if so, how much more expensive (ballpark) can the one without standard exceptions be?  

When it comes to qualifying for a loan like verifying your income, credit score, debt to in come ratio etc, will it help to say that I receive additional income from my househack tenants aside from my w2?

But I had it set to only allow guests with verified ID and prior positive bookings.

Be sure you contact the county first to verify if you are allowed to operate as a STR in the area you own.

If you want to keep them, make sure they are 100% honest about their intent, check zoning to verify they are allowed in that area, charge them market rate, and confirm they are insured to protect you and the property. 

Verifying last 2 years of rental history very important!