I recommend finding a strong brokerage with investor-friendly agents who are doing a high amount of volume.You can set up systems and procedures to make it easy for them to refer your company over. and keep their clients happy.

Not trying to cheat the system, just trying to understand what I'm looking as I consider real estate options.Separately, would something with an ADU be considered a multifamily?  

Let me investigate a house with your local agent and take photos of the major systems BEFORE YOU MAKE AN OFFER.

Taking that money out and anything that leads to more people using the equity from their homes and reduces the friction to that process is not good in the long run.As a NPL buyer who buys 1st position mortgages, we do watch stuff like this carefully as the moment these borrowers get high CLTV's any drop in pricing and change in economic conditions will lead to more foreclosures versus bankruptcies.

There is an unfinished basement which will likely be permitted to convert into an ADU but might trigger the installation of a fire sprinkler system ($30k).

From your post, I am not sure you need a mentor in the same sense that many syndicators offer mentorship, versus a more traditional mentor.  

Having a system tailored to real estate investing and doing everything I would want a bookkeeping system to do has made the financial information I have much more accurate and timely.

You state NN versus typical NNN.  

They setup to assist clients from all over the US and have great online/mobile banking system so you don't even need to go to a branch for your banking needs.

Someone with a large portfolio might have a system that works for them and which they have maximized but which might not translate well to your market, your personality or your approach to investing.