YES! I totally and completely 2nd guessed. I cried so much. You probaly don't want to hear my story, because I really really struggled. I remember asking my husband on the day of closing.. "can we change our minds?" It's not that I didn't love our new house, but after 19yrs in one spot it was really hard to make such a change. I worried about so much (the amount of parking space, the hill in our backyard, kids making friends, noise level iwth an open plan, older kids feeling like it was "home", etc. etc.).
The house you've picked is LOVELY!! I love ranch style homes and that one is so unique. I love all the stone and flat yard too (ours is on the hill - but wooded).