@Fred Cannon that is why I wanted to gather some opinions on how people perceived some of the rules of thumb for cash flow. The horse has been pretty well beaten to death but the out come is... it all depends.
For low cost markets like I am in you are not likely to see small MFH buildings put out $1000+ per month but I also don't pay $300,000+ so it makes sense the rules probably waiver some. Neither is right or wrong there are some nice advantages to both sides. I would love the simplicity of only needing to buy one building a year to match the same cash flow that I get with three buildings a year. The flip side is a vacant unit here and there doesn't impact me much at all vs if I only have a few large cash flow buildings I will feel it soon as something is vacant.
There several other factors that have all been talked about many times in this chain as well. Boiled down you do what works for you. Check your facts and numbers along the way but if you are happy with the deal then it "is a good deal" doesn't matter who else is making $1,000,000 a month.