What I've seen work best is commercial, STR, MTR and co-living. 

Since it says you are new to real estate and sharing calculations, my experience is that a lot of new investors are spending a lot of time "modeling" and zero time actually seeing homes or multis or commercial properties in person.

I feel fortunate to find that one and the land its on is up zoned it will allow multi story mixed use commercial and resi and STR and is in the biggest city of the wine country in Oregon so upside along with it..

You mentioned that this a commercial property so I am hoping that you are using depreciation on this one, which could go for as long as 35 years with a commercial and 27 years on a residential. 

It depends on the number of Units, Residential or Commercial, Apartment Complex or mix of Single Family and Multifamily.Under 25 unit - Tenant Cloud, Rentech.Under 100 - Then Doorloop/Buildium.100+ - AppFolio, Yardi, Rent Manager.Apartment Management : Yardi seems to be wildly usedSingle Family ( Mixed ) - AppFolio seems to be popularRent manager has a good customer support team.

On commercial non owner occ loans the lender does not have to take the Dil and can foreclose and get a deficiency judgement against the borrower. 

If you have a commercial residential property (>4 units), the value is based on NOI.   

Not a course, but I recommend the book "Crushing it in Apartments and Commercial Real Estate" by Brian H Murray.

When I go to my credit union for a commercial loan there is no junk fees, no origination fee or maybe a half point origination and a better rate.

Tenant estoppel letters should be used in the sale or purchase of any tenant-occupied real estate, whether residential or commercial.