Refinance 80% LTV ~6 months after discharge

[ChaserRu]

I am purchasing a home on contract. I have owned it for about 1.5 years. I put a downpayment on it of ~3%, got it approximately 90% of the market value, and have put in about $5k in repairs. I was discharged earlier this year. I have until March to refinance. I doubt I have a chance, but does anyone have any ideas? I am currently paying the contract sellers pmt at 5.85%, I know I won't get close to that, but I figured I may have a little bit of a shot due to the equity. If I sell, I would take no less than $145k. I owe $120k, and could put another $5k towards the refinance if needed.