This is a really neat build.
Amazing what you can do with micro R/C gear and Electric Ducted Fans compared to when I first got into R/C in 1978 with clunky huge Kraft, Sanwa, and Futaba equipment.
What we called 'micro' then is MASSIVE now.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !