A lender would likely approve you up to $277,035
On $91,000 of gross income with $550 of existing monthly debt, the 28/36 rule supports about $2,123 a month toward housing. With $49,000 down at 6.65%, that reaches roughly $277,035 — a $228,035 loan at 17.7% down. Your resulting debt-to-income ratio would be 35%, and you are currently limited by the housing ratio.