And real estate deals fall apart constantly.

Depending on where this is, you may be in an area that will be hard to attract decent renters and you may be dealing with constant damage and eviction.You really should run the numbers, and also think about the tenant base and if you want to deal with that tenant base. 

Constant communication and notifications when there are vacancies?

If they allow, the situation changes and you have to constantly verify.  

Then we have constantly rising costs; I looked at a utility body truck the other day that was 75k.

Tenants that ask for a lot before moving in may turn out to be a constant source of aggravation.

I was constantly wondering why buyers were shutting me down, telling me xyz about my numbers , trash talking my deals!

You want to collect rent increase each year to help force the mom and pop tenant to constantly build in that cost so more easily absorbable over time.        

Looking to narrow down my constant search for the best market for small BRRRR multifamily and am seriously considering Montgomery, Alabama. 

@Jose G Delvalle Bueno Even with title search, the appraisal and underwriting including attorney review, a good HML should take no longer than 1 week if they're constantly working on your file(and they should be right?).