Finally, because it was an income producing property that required opening a merchant service account, we had to go through a similar process to accept credit cards.

An alternative is to look into the Wells Fargo Business Deposit Card.

Louisiana is a wild card state, IMHO.

For the first time ever I received a yellow post card and a letter from different investors willing to buy my primary residence in Dallas, as is, for all cash (these mailings were received within 2 days of each other).

Same with credit card interest for business.You need to have a serious talk with your partner since you didn't find this out until after investing with him/her.

I haven't formed my business yet as I haven't figured out a defined game plan just yet, so I don't know if I should just have some business cards with me with my name and number possibly?

My plan to market in my area is just go door knocking with my business cards.

They also gave us the option to accept ACH and credit card transactions.  

This is my intellectual and copyrighted property sold by a website that steals credit card info from unsuspecting good people like yourselves.  

If he's got small amounts of debt, as you noted - I'm assuming we're talking some small credit card debt, or other installment amounts - those should either have been paid off already, or paid off with the income from the rental property. 2.