1st time buyer w average credit & low down payment for 190k home

[Pablo Solorio]

Looking to invest in a possible rental property that is a triplex. They already have 2 of 3 renters & it is cash flow positive from the looks of it. I currently bring in around 85k per year w credit in the high 500's. How likely would I be able to get pre approved for a 1st time buyer loan with little to no down? Would it be better to try & do an owner finance deal or other alternative? Kindly appreciate any responses! Thanks