to keep the character in the air longer you could lower their mass (to reduce the effect of gravity), though if you are going to be using physics based forces this could have negative effects.
the other option is to use the time dilation where reducing time scale for the player it should reduce the acceleration affect of gravity.
the angle of rotation will mostly be based on rotation rate, which if you say use raw mouse input a mouse with high DPI could rotate much faster then a mouse with lower DPI or even a Joystick.
the feel of it would mostly come down to fiddling with numbers.