I wouldn't worry about affording "enough" house. People usually overestimate how much house they need. Small homes can be just fine.
My house is only 1,114 sq. ft. with a 1-car garage, two bed, one bath, and it's perfectly fine for my wife, son, and I. My wife would prefer a larger home, primarily for more storage. But if we just got rid of the things we never use (like the stuff that's been in the garage for 6 years, never touched), we'd have more than enough room.
When we got married, my wife's condo was 1560 sq ft, 3 bed, 2 1/4 bath, 2 car garage. She really wanted to stay in her place. It was a 2 minute drive for her work but 45-70 minute one-way commute for me to get to work. We had a constant back-and-forth with my wife arguing that we needed more house and should keep hers. I replied that the commute to her place, compared to my place, would be equal to 30 days over the course of a year. She was very sad to sell her condo, and it made our marriage really difficult.
Then life happened. My wife got laid off. When it came to school for our son, my wife really wanted our son to be in a Catholic school. The best one in about 100 miles is a 5 minute drive from my house. It would have been a good 30 minutes out of my way had we stayed at her house. And 90% of the kids from the school live within a 10 minute drive of the school. When my wife is sick, because we live at my house, I can come home and pick up our son from school and get back to work within an hour. Living at my wife's place would have required a half-day off work burning leave.
Get a house if it makes financial sense and buy what you can afford. Don't worry to much about too much or too little house, because life doesn't work that way!