First time buyers, buy what ever you can afford, just get your foot in the door.
Live in the payment not price.
If you cant decide what to do or what you can afford, call Lynette (Vendor of the Month) and ask if the house is 500K at 3% what is the payment, say the price drops to 450k and the interest is 5% what is the payment? This should let you know if you can afford to buy or to wait.
Call me for help, always here for you.