I realize I am not cut out for the entire REI process of consistently finding multiple properties for particular exit strategies. 

No but you could create an excel macro to do multiple properties at once - also the numbers that someone provides to me I take with a grain of salt anyways. 

Using criteria like price-to-rent ratio, pop growth, employment trends, and wage growth, relying on multiple sources (PropStream, Zillow, Rentometer, FRED) to calculate averages. 

I am also considering multiple rentals and it appears that I have found a pretty good property manager based on feedback I have. 

LOL but this route you have only 4 weeks to contact all the sellers MULTIPLE TIMES.- The golden rule in my group is the seller has to have a deal, the numbers work, be willing to sign, be willing to move out no later then 7 calendar days prior to the auction!!!!! 

I'm sure y'all already knew that!

I would recommend utilizing one lender or broker who you can negotiate the best terms across multiple different lending outlets for you.

Non-passive to achieve this level of return.Add the addition of the ADU makes the main unit rent controlled if over 15 years old.the work to add an ADU likely exceeds the effort of a brrrr that can achieve infinite return  Experienced investors are adding multiple ADUs by leveraging items like bonus density, committing units to affordable housing, etc.  

In general, I'm curious how investments with multiple investors are structured.

I invested in Jacksonville, FL, because my old job would fly me there multiple times yearly.