Say I pay cash for a house or put down 30k?

That will vary depending upon your experience level, the quality of the property, the cash flow of the property, and the lender's appetite for that type of loan.

.- Monthly cash flow from day one- More properties that are fully separated metered -- gas, electric, hot water all metered for individual units- Significant increase in property management -- evictions, late rent not because somebody simply forgot to press "send," potential domestic issues, issues between tenants, etc.

I did overpay for the property, but not to where I am screwed if I where to move out right and get it full rented I will cash flow about 50 dollars per door so it is very slim margins 

My current strategy is to maximise equity over cash. 

Also did you grow only through cash flow or did you take investor capital to reach where you are today? 

Even with conventional loans, unless you've been self-employed less than two years or don't report your income, it's the same as someone with W-2 employment We lenders just cash-flow you differently.

And if you are handling the bookings/marketing, get ready for constant calls from the owner that over leveraged themselves thinking this is a cash flow market when, at current prices/rates it is not, unless they invest significant capital into theming.It's great that you've found a handyman/cleaner you trust.

Total build costs of 600k )this includes lot, soft/hard costs, and 60k overhead recovery to my construction companyAmortize @ 20 years, all expenses equal gross rents so break even cash flow.

Purchase price: $650,000 Cash invested: $65,000 STR in Black Hawk CO