Financing decision Heloc

[Michael Ryan]

Hey Guys 

Need some opinions :)

Just paid off primary home worth about 200k

A rental we have we owe 9k value 100K. This one we make $300 a month right now until it's paid off. After it's paid profit will be $580 a month

Another rental we owe 60k and worth 130k. This one we are even monthly.

Credit score about 630

10k credit cards ( I'm paying them off )

Income on paper is bad

If I can do I do a heloc to buy another unit or refinance what I just paid off and have cash to buy ? 

We want to get more units 

Thanks