But then he also says that to cash flow $100-$200 per door is a winner as well.  

If you wanted to go this route you would need to speak with each bank individually.In both scenarios a smaller or mid-sized lender is a better route than a larger bank.

You're probably familiar with this sort of deal that allows the buyer to finance a larger amount -- in essence, the house will approve for $180,000 but the cash that comes to me at closing is only $172,500. 

AJ,Anything to do with locks on doors, windows, lights outside,  etc.... is very important to me for liability/safety issues.

Another idea, search for mismarketed properties or ones that could be better used in a different manner....a garage that could be converted into a living space, a larger house that could be split into a duplex etc.

Valued around $270,000 We'll call this one Yellow.I have the opportunity to purchase the duplex next door to the one I am occupying.

I am out the door by 7:00 AM and usually home from work and picking up my daughter from school around 5:30 - 6 PM.

If you're gain is $30K and you sell now and pay tax that's $6K in tax that goes out the door immediately.If you wait you'll lose rental income for that 8-10 months. 

I hope to utilize the BRRRR strategy to eventually own a larger apartment complex and/ or mobile home park.

You'll be surprised at how this can open doors.