If you are planning to do a few of them or even just a couple a year, it might be good to check in with a broker that is familiar with the space and has the connections and knowledge to help get you what you need. 

For example most single family homes converted to multi family tend to not preform well for long term rental but if you are open minded to MTR strategy that same property may produce well. 

I am now reading the Multifamily Millionaire book and basically want to gather some wisdom and knowledge on how to start this investment journey I want to embark upon. 

The roof needs to be fix sooner than later so might as well, do it now. 

I am declaring primary residence but will live elsewhere as my lender only requires "intent to move in by 60 days" with no proof of move.Three units - $4200 rent income1st unit (3 bd 1 bt, ~1000 sq ft) is currently vacant, previously rented for $1600.2nd unit (3 bd 1 bt, ~1000 sq ft) rented month to month at 1050. can get $1600 as well.3rd unit (2 bd 1 bt, ~800 sq ft) rented for 1000 until April 2025. can get closer to 1200-1300.

This is particularly important in areas with rent caps because you can suddenly find yourself well behind market values for rent.As for how much, that depends on your market and what rents are in the area. 10% is a lot and you may have tenants move as a result. 

Unfortunately leases that were inherited do not do this very well.  

Then I get STR data from AirDNA to ensure it's well above 1.5x LTR data.

Online education and resources can also provide foundational knowledge.

It would give you experience and knowledge along with making $$