Your flight was within the parameters of the COA in place at that time
so that part is good. We had a 10 mile radius at that time and you
recovered at around 3 miles.  Your altitude in the kml file had a high
of 9259 meters at 17:04:26. The lowest starting altitude in the file
was 1159. That gives 8100 meters above ground level or 26,574 feet.
Current L record is 32,030 feet so it doesn't look like you beat it.