I would sit down and make a detailed budget so you know what you bring in each month and what your costs area. This should include lifestyle expenses as well. Generally this will lead you to realize that what you are qualified to borrow and what you are comfortable living (in order to pay the bills but also live the lifestyle you enjoy and hopefully put money into savings or an IRA each month) on are very different.
You also need to consider all the expenses one incurs with a home purchase, which go well beyond the mortgage, interest, insurance, taxes and possible HOA fees or Mello Roos.
In my humble opinion, your 30 year mortgage should never be moe than 25 - 30% of your total income
Think about that for a moment, if your a couple, and something happens to the co-borrower, can you still afford that house??
So...one borrower, 25 - 30%, you will sleep better!
If your gut feeling turns out to be unrealistic, then your advisor should help you readjust your expectations. If they believe you can comfortably afford more than you first thought, they should point out why, but not pressure you to leave your comfort zone. Ultimately, you know yourself best, and a good professional should provide you with all the information in layman's terms, so you can make an intelligent decision.
As a buyer's advocate, who is both a real estate broker, as well as a registered mortgage advisor, I specialize in helping people buy homes and finance them, together, at one point of contact. Feel free to ping me for an awesome mortgage calculator that factors in down payment, principal, real-time interest rates, tax, insurance, hoa fees, mello roos, property taxes, your estimated income tax deduction, realistic appreciation models, and even how long your reserves can cover you.
Or call anytime for help figuring out exactly where you stand.