I've just watched the "gator method" today.

Watch out for any debt you had on your SFR.  

Two of us sat on the couch and watched the cartoons. 

@Polat CaglayanI've never seen a formula but here is a general rule of thumb for multifamily:The class of an apartment refers to the quality of the building, which can be determined by a number of factors, including age, location, and condition: Class A: These are the highest quality apartments, typically built within the last 15 years.

https://www.biggerpockets.com/forums/12/topics/1122318-quality-turnkey-companies?

So an identical neighborhood (income, crime, school quality, etc.) can cost you as much as a $100k less on the South side simply because your neighbors are brown or black as opposed to white.this right here is the gem advice.  

@Stacie TellesMost lenders have a seasoning period (typically 6-12 months since the original loan), so check with your current bank or shop around for others.I would also watch out for prepayment penalties on your current loan.

Yes you partner with them on the individual deal but you get the reps in to become better at watching a deal from start to finish. 

@Jay Fayz for SFR (1-4 family) Classifications are mostly opinion-based.Not aware of anyone tracking eviction rates, except Evictions Lab nonprofit that doesn't like landlords.Here's some info that might helpt:---------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

I'd sit on my couch and watch the Elk coming down to the river, geese, deer.