Now let's say I find a triplex that covers the 1% rule but combined cash flow from all 3 doors is roughly $150-$200 or would you want to keep it at $150-$200 cash flow per door with the 1% rule applying? 

Sorry if this has been covered before, we are located in Minnesota if that matters.   

I'm trying to get a mortgage, but it's entirely possible that the mortgage might not cover 100% of the price of the house.

This is the percentage of costs (purchase and rehab) covered by the loan.

Or maybe the units aren't equal and one rents for $2800 covering most of the cost of living there. 

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.

They can also give you a better idea of how much you should be prepared to pay so you can cruise through your closing with confidence.And as you plan ahead for closing day, be sure to budget for your real estate agent’s professional service fee too, in case the seller doesn’t cover it.

@Anthony Miller here's something to think about that's not covered in any books!

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.