Need help analyzing a seller financing deal

[Niraj S.]

I have a 3 bed/2 bath home offered at 290K purchase price. Estimated rehabs will be around 20K. ARV is 320K. Seller is willing to finance the deal for 0% interest for the first 5 years and then market interest rate once the 5 year balloon period is over for the 30 years amortization. The house is in a top rated school district and the owner is willing to stay on as a tenant for 3 months at $2100/month rent. Taxes are around 1400/year and Insurance is around $1800/year. Exit strategy is to either do a BRRR or fix and flip. HOA is optional for $450 per year and there no no rental restrictions in the subdivision. Thoughts? Anything I am missing in analyzing this deal?