Higher income due to newer properties and higher resale/refi due to the new build out 

Most business credit cards do not report on your personal credit report so often times any debt associated with the business credit card will not impact your debt to income ratio. 

So, as the first property would be a triplex or fourplex, I was in the understanding that I could use 75% of the income coming from that initial owner occupied purchase towards my debt to income ratio going into the next purchase.  

Such short term rental  will follow these criteria(see numbered list below), in order to take advantage of (1) qualifying to fill out schedule E, thus avoiding the Self-Employment tax should there be any profits. and (2) being able to offset your W2 income should there be a paper loss. 

The low risk requirement eliminated lots of investment types like trading crypto, venture capital, ultra high leverage real estate deals - except for maybe a very small percentage of my investable assets.Since I’ve already accomplished tax minimization by managing to hold the majority of my assets in a retirement plan and paid the taxes to turn that plan into a Roth, number 4 is not a concern.I do invest for current income as second place to wealth preservation, and increase wealth as third place.

Assuming this is proper in your situation, with treatment of a tax partnership, reporting would be as such with a Form 1065 filed, claiming all rental income and expenses, and then issuance of a K-1. 

I know that it is typically 20% gross income to have another company manage the property, but wanting to know the cost breakdown if I were to self manage.

How is the rental income.

We advise landlords to require two main criteria:1) Household income should be at least 40x the monthly rent.2) Applicants must have a credit score of 680 or higher.It's also important to review credit reports for red flags like rental collections or high credit card balances.

What that usually does is reduce the value of the home because nothing is done to code or correctly, even by people who think they are handy.