Dont use character. Dont use pawn. Make your own controller. In c++.
And do not use tick. Not even for prototyping.
What else? Oh yea, if you need this to replicate on a server you need to expressly look into how it’s supposed to be done hint, you wont find any best practice way within unreal’s free to use templates.
Ha, and last but not least: don’t even think about trying to use the engine’s physics - unless you swap to physx, then mayne you can at least think about it.
Come to think of it, you may be better off getting the starting code from something like Gdot or similar. You can find full on phisically calculated “flying” controllers out there - it just depends on what exactly you need…