I also wouldn't worry about 1.3 miles. We looked at two schools (moving to the area from abroad), one which is just around the corner, the other a mile or so away.
And you're right, so much comes down to the head. I'd planned to send them to the round-the-corner one, but we were shown round by the (very nice) admin lady, and the head was neither seen nor mentioned.
At the further-away one, the head dropped everything to take me and DS1 around (we'd made an appointment, but the office had forgotten to write it in her diary, so she wasn't expecting us). She knew all the children by name, and she stands outside morning and afternoon so you can go and chat to her any time. So that's where my dcs go.
She's a total figurehead, and runs a wonderful school, and my children are so happy there that I just want to follow her around giving her cups of tea and cakes all day long. But instead I have to work
And I don't think a mile or so is a big deal. Like Mollie says, some of the pupils will live close to you. We walk there in the mornings and I fetch them by car in the afternoons - in the morning we say hello to loads of people en route, and they get to school all pink-cheeked and ready to get stuck in. But they are far far too tired to walk it again in the afternoon, that's for sure (we tried once and it wasn't pretty).