However, I would like to finance a business auto loan in my LLC name in order to help further build up my business credit.

Another reason to raise rents if you go to sell the property it will be harder for a new investor to get a DSCR loan because the rental income is not high enough for the purchase price. 

You want to get the best loan you can.

Know how to fund your buys (bank loans, personal loans).

There are different codes used for NSF versus fraud rejections.Cash app and Zelle are more secure electronic payment options, but I believe both have send and receive limits that are prohibitive for business use.

What did you pay, what is market rate rent, how much equity do you have, and what interest rate/loan type do you have?

I think I was so excited about finally securing a medium-term rental that I moved forward with drafting and sending a lease for them to review and sign.

I suppose in a round about way, putting nurses or other medical professionals in the description does omit groups who live off disability or social security. 

More on DSCR loans- DSCR loans won't use your income to underwrite the loan.

The lender will give you a generic preapproval letter that states how much they are willing to loan you when you do decide on a property.