Pre '2010', maybe just maybe it will lean heavier on the fundamental mechanics than specific processes. 

I am not too certain on which specific strategies I would like to learn more about.

I don't mean to be negative and obviously, you are going to do what you want to do, but to put it in perspective, I bought one of my 1st properties in 1990 (at a peak), and sold at a significant loss in 1997, due to specific circumstances.

Happy to share lessons learned from out of state managing/investing if you have specific questions. 

Our letter specifically stated no appraisal necessary.

Narrowing down the options will probably come down to comps and city/neighborhood specifics; things like permits.Any good suggestions for finding out how long permits are taking in certain areas?

If you have any specific questions, I am here to assist.

Be sure to check with your lender to confirm their specific criteria regarding the property's condition.In short, fixer-uppers can qualify for DSCR loans, but the property either needs to be producing rental income or have a plan to do so after renovations.

The splitting and selling of an ADU is strictly prohibited and the wording of ADU laws are setup specifically to make sure this does not happen.

It's hard to give any recommendations without any specific questions/real numbers.