IMO, buy what you can afford - no more, but you can go less.
I was once given (what I consider bad) advice "Bite off more than you can chew, and then chew like hell!" Lucky I didn't follow this path or I'm the one would have been bitten!
You have to be comfortable with your purchase/debt. Getting advice from others who consider your purchase "too expensive" are offering that advice through their own experience (or lack thereof). This is YOUR decision - YOU have to be comfortable with it. Getting opinions from others is great, but the decision is yours alone.
Your own circumstances (financial, relationship, attitude) will dictate the path.