Other than a response of knowing what your comfortable debt level is, how do you decide how much debt to put on a rental property, if any at all?

Currently I do not want to buy a new car and have a new debt to pay off, however I have had trouble with getting really bad used cars.

We have about 78K in CC/personal loan debt.

Gross Potential Income(-) Vacancy, Bad Debt, Concessions(-) Non Revenue such as model or employee units= Net Rental Revenue(+) Other Income such as utility incomeYou need to net out vacancy before calculating what the utility income will be since it is tied to occupancy and usage.

We will use some of the profit to pay down bad debt and the rest we will save for investing next year.

You should see if the seller will lower the price.....THEN when you close on it see if you can raise rents.Just because it was built in 1989 you never should "skip over" fees such asProp Mgmtvacancy  (Yes it is occupied now but it won't always be)insurancerepairscapexof course debt service (mortgage)lawncare, cleaning and maintenance (Different from repairs)trashDo your tenants pay for water and sewer? 

I lnow that one of my lenders will allow me to refi as a buisness loan (must have some form of corporate structure( C-corp, S-corp, LLC)  as long as the rents is $1 over the debt service of the loan. 

Credit Score is about 650 for each of the couple. 90k revolving credit card debt..with utilization > 95%.However rental history is good.

Assuming the rent from the rentals is covering all costs and debt repayment, hopefully with some positive cash flow, it would be counter investing to pay either of them down.

Definitely echo the sentiments that $0 money investing is much more myth and marketing snake oil than being plausible.Closest thing I know to quick easy funding is a 0 fee, 0% credit card balance transfer but not everyone can command 30K plus credit limits and I wouldnt recommend that path unless you are equipped to handle that debt once the promotional APR expires