Rent to own or lease option investment?

[Logan Addis]

My dad has a house and some land that he was going to sell to my stepsister in a land contract at 3% and $300 a month and 55k total. That would end up being about 18k in interest. She backed out of the deal. He was really counting on that so he's fairly "motivated" I've been doing tons of research on creative real estate investing but haven't done a deal yet. I was wondering if I could use this as an opportunity to get it under land contract and get someone else in there to either do rent to own or lease option. I'm still a noob and will gladly take any advice. Maybe with these numbers there's no money to be made, I was hoping someone would have some ideas, I need to act quickly.