The batting will tell you what to do. Look at the package. It will tell you how far apart you need to have something (tie, stitch etc.) to hold the batting secure. Remember that the dimension on the packaging should be measured in both directions. As long as your ties are within the recommended measurement, you are all set. As far as the border, it's your quilt, you can do either of the ideas you have. However, depending on the width of the border, you can just tie it too.