Typically people buy a house in a specific area for good schools. That's ultimately what drives a lot of families to be where they are. In my opinion, if you don't have this motivating factor, you're better off waiting until you do. Because obviously it's not just the cost of the house you're paying... closing costs, interest, home maintenance & upgrades, and of course taxes from here on out. You don't want to be facing the decision to move again when it comes time to put kids in school, if you can help it.
Also keep in mind the avg number of years a family spends in one house is 7-8 years. We had no plan to move, but it turns out we moved from our starter house after 7 years. Kids came and we moved because of schools & storage space. Like many, we only bought the starter house because we were starting our lives together and had to move out of our parents'. If your SO isn't a factor either, I would suggest you save your money until later.
You mention marriage and kids soon, but you only mention your money. Wouldn't you have even more money combined at that point to make a better decision especially for future-proofing (ie. bigger house and better school district)? It sounds like you want to jump on this now because it's a good deal and [prices are going up by the day]. This is not the way to make such a big decision especially if you're not up against the wall to do so.