Should I have cards made up of our business name with my name on there as the property manager? 

Another option: Get a credit card with zero interest (and do a balance transfer).Find a company (RDC Capital, local bank/credit union (smaller bank)) that will give you line of credit (commercial) and pay back those loans with the LOC, which should be fixed after the "draw" period (20/30yr if possible). 3Hope this helps. 

You can see from the graphic below where it is located in the park. 

I give them a card and chocolates in their mailbox, or a card and $5-$10 Target card, but it is not a regular thing.

I have used both prosper and lending club as well as 401K loans and credit cards (18mo 0% interest) as well as other investors giving them 8-10% on their money. 

I plan to payoff my credit card debt of about 15k or take the profits of the sell to purchase my first investment property.

So you've got equity gained by retiring the debt with the tenant's payments plus the equity gained by the asset appreciation and it's like a double bonus.Debt that is not productive or is for depreciating assets, such as for old credit card debt or automobiles, is the type of debt to avoid.

We even have cute little cards all over the house with surprise cool things we did to the house etc.

She has a social, a green card, and a job here in the US. 

You can ACH the rent directly out of their account, you can charge a credit card ... paysimple.com is the first hit on google for ACH .