You linked to the wrong section (again); that covers how ATC should handle unmanned balloons, not what the balloon operator should do. You probably meant [FAR part 101](https://www.ecfr.gov/current/title-14/chapter-I/subchapter-F...), of which subpart D covers unmanned balloons. But it looks like for anything under 6 lbs, most of the requirements don't apply, except to file NOTAM and notify the nearest ATC when you launch/descend and a few other things.