The idea could be solid and you already know the problems so I won't state them again. For these mechanics to work as a game your fighting system must be very very good. Like "Dead Cells" good.
I am not sure but I think you also waste a lot of time on key bindings. It is good to give those options but only if they don't take much time like the unity new input system.
I had many problems with these big guys and could not finish the game if there was not any bug in the game :)