This is going to come off as negative. I promise I am not a mean spirited individual.
1. Ditch the vertical video. Never do that again.
2. Save high speed (timelapse / hyperlapse) for an outward facing camera that doesn't have humans in it unless it is from a tripod (for example a hyperlapse of a stationary plane with humans preflighting, loading bags, etc)
3. Add a 2nd camera to the glare shield facing the occupants and use that for your cuts.
I like the music. Others will say they hate it. You do you w/ regard to music. I think epidemic sound has the best, highest quality sound available and the price can't be beat.
4. Add an in flight mic. Start the video with the ATIS over playing the video after the intro but before rotation. We want to hear you talk.
I skimmed your channel and I much prefer the angle from your video titled "First Flight Private Pilot!"
If you can swing 3 cameras, two from that angle ( one on the opposite side and the 3rd looking at occupants)
Then throw in a cheapie $40 knockoff you mount outside to a tie down for some outside shots.
Last and most important. Start with a story. Plan the story. Use the video to tell the story.
Interesting things may happen during the flight that change the story or create a new story.
But if you don't begin with a story, you are just creating B Roll.
In the current youtube ecosystem, just filming flights will result in low exposure (I don't know your goal but nobody works that hard on editing videos to not have it seen.)
Sorry if I sound like a dick. I am really not trying to be. I am just giving myself the advice I know people would give me on that same video if I asked for a critique.
Also don't stop. Know it is hard. Have fun and most importantly, make the video you would want to see.
Paging
@mr_happyland to provide some real constructive advice.