We are in a similar situation as Zurgwife. I guess what I have learned from past home purchases(3) is that I would like to have a solid 40-50K in savings (liquid) after purchasing a house and then have the $500 "cushion" per month. That only adds up to $6,000 per year, which is not much, sadly. We have experienced all different ranges of financial juggling, and years ago, when we bought this home we based it on average salary increases, yadda yadda.... those did happen, but then so did salary cuts to hang onto the job, job loss, had a few medical issues / car issues/ selfish moments of WDW trip taking

/ I would buy a home based on salary 10 years ago if planning to have kids, 'cause that college savings plan will eat up any increase you may receive, and it will still not be enough.Our taxes have gone up way more than a national average, who could've guessed 9/11? You get the idea....It is so hard to afford a home now, and I would purchase one over not...even if there was not much left over at all (paycheck to paycheck) but not everyone feels that way, and renting does have it's merits...changing jobs/relo may be easier, again, taxes, you just can't spend on stuff that may end up in your basement anyway....
As the others have mentioned, seriously write down EVERYTHING you spend on, pets, stamps, dry cleaning, updating the computer, then add 20% to that, and THEN see if you're comfortable with any left over $$$$ It can cause a lot of stress to fall behing....one thing we had happen was our car being totalled 1 year after we moved into the house, DS was 3 months old, and we had not budgetted for car payments as the old car only had 62,000 miles on it...9gotta love the bluebook for a Ford TAURUS

NEVER again)it took a long time to catch up from that only t have the salary cuts start to happen. You learn as you go along, and that is probably what will be best for you. Is the home in a good selling area if you decided you were in over your heads? That is always something to consider. I think it will work out for you, you will be able to adjust to what ever may happen. On a happier note, it is very exciting and cool to own your own place...good luck!
Pam