A lender would likely approve you up to $217,619
On $70,000 of gross income with $550 of existing monthly debt, the 28/36 rule supports about $1,550 a month toward housing. With $29,000 down at 6.65%, that reaches roughly $217,619 — a $188,619 loan at 13.3% down. Your resulting debt-to-income ratio would be 36%, and you are currently limited by the total debt.