So our business has mainly been buy and hold larger multi family buildings but we have come across a 4 unit that we can not pass up but need some experience advice on which route to go. 

I recently moved from a duplex where I was house hacking in Maine to Idaho.

@Tyler AubeI can't say much about the process because I was working for a public housing authority at the time and I was mainly evaluating the software aspect.

Yes i wouldn't be opposed to living in a unit, and no i'm not claiming that income on tax returns it's mainly for fun and AFAIK i don't want to and don't need to pay taxes i think

Find your clean-out plugs for main drain ahead of time to possibly save headaches.6.

I am mainly looking for the cash flow game in long-term rentals but also have been looking and BRRR strategy recently as it seems to be the best way to get the best cash flow or possible just flip it to capture the gains more quickly.  

I'm just about to start my first house hack duplex rehab project here are ideas I'm considering:-high efficiency toilet system-ceiling fans in bedrooms and main rooms-electronic keypad door locks-programmable thermostat-programmable electric bathroom baseboard heater

We are age 52 and are already semi retired and feeling the itch ... the VRBO condo would serve the purpose of A.)

I can find that out with a little more research, but my main concern is that I don't know enough about certain terms or details. 

It’s mainly due to abundant cash infusion from private, hard, local & institutional lenders.