House hack and repairs

[Jameson Dixon]

Hello! I recently bought a 3bed/1.5 bath in the Chicago area suburbs. I'm planning to rent out one room and airbnb the other. I will need to do some repairs so I'm curious what are some creative ways to finance some of them? I have cash to cover mostly everything that needs replaced, but I'm also looking to keep as much liquid as possible. For the example, I'll need a new furnace. Is this better to just pay it outright or finance it at 0% and roll it into the rent/airbnb cost?