The business credit will help for other trade lines, but personally I believe for applying for a mortgage that won't be factored in much. 

Also don't forget about blocking streets, police detail and all of that need to be factored into the price. 

If you continue to pay your mortgage on time and there's no issues, it most likely wouldn't be an issue, but it is a risk factor to keep in mind. 

The rates I'm getting from my broker are 4.375%-4.5% for a 5/1 ARM.I factored in the property management at 10%, but I'm planning on self managing. 

Closing cost and fees will depend on two main factors.

Also with converting a garage to an additional dwelling unit there can be permits and zoning to be concerned about so factor that into what you would have to learn about if you have not handled that before. 

@George ChungDepends on number of factors such as how good are your financial records (balance sheet, income statement), how many state returns there are, just to name a couple of the factors in play.

Due to these factors, an extreme variation in the U.S.

And how has the FUD factor of the CoronaVirus affected your overall acquisition strategy? 

The fact is there is a balancing act of factors prices, interest rates, rents, supply, economic, etc.