Lenders will want to verify you live somewhere else through various methods such as a utility bill, 12 months rent payments + lease, and/or a explanation regarding your current living situation 

All cashflow after that will go directly to your bank account.When you make contributions from SDIRA on the other hand, you don't get to enjoy the cashflow and all profits right away since all proceeds go directly back into the IRA account and you end up paying taxes when you are ready to cash out.My question is what method do most investors prefer to go with when investing in syndications ? 

Interview qualified contractors that are licensed, accept various payment methods, provide a warranty for their work.

Here are some and considerationsTo select the neighborhood that best suits your requirements and tastes, investigate the individual neighborhoods within each area.If you currently have children or want to have children in the future, research school districts.Because traffic and transportation infrastructure might differ, take into consideration your preferred method of transportation.It might be beneficial to visit each location, look about communities, and get a sense of the neighborhood before making a selection.

The median income and other MSA data is garbage, at least when it come to Detroit, so agree your $30k is also then garbage, per your logic:)City of Detroit is suing the Census Bureau for their antiquated methods leading to misrepresentations of Detroit.

Being I do not have 20-30% in a downpayment to do the BRRRR method.

I believe that this investment method gives you great cash on cash return and gives you a lot of experience

They may use different methods to establish value based on market, conditions, and availability. 

In order to change an accounting method (Form 3115), you first need to establish one.

Another reason to use this method is there are never any delays in the deposits having to do with a third party, and only one institution (mine) has custody over the deposits.