The best way to get a clear answer is to reach out directly to the servicer of your assumed FHA loan.

Look at the laws themselves directly. 

A lot of forum members are experts in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, buy and hold investing, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.If you haven’t been to it already, the Bigger Pockets blog features links to their fantastic podcast and many great articles: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.

I am also looking for info on creative purchasing and "Subject to" purchases, especially BRRRRs.

I invest in both areas and would be happy to answer any questions or point you in the direction of some great team members that can help you out.

I have to give a shout out to @Michael Baum because I honestly would have never thought to call local banks directly when trying to get a house from OOS. 

Attempt Direct Communication: If you haven’t already, try reaching out directly to the syndicators or the managing partners.

So I have a rental property with two fairly mature trees directly in front of it. 

The links you provided turned me in the correct direction!

In today’s unpredictable market, how important is flexibility in financing? Have you found that private money lending allows you to structure deals in ways traditional lenders won’t?