I’m not sure about the Zoom speed,. but the question of inverting the mouse was asked earlier, and answered by Jimmy-C in another thread…
Go to Edit > Customize (F3), and at the very bottom of the pane you should see a box called ‘Invert Mouse Wheel’.
One way to quickly move the camera1 is by switching to the “Quad views” ..so you can see the TOP, Left, Right etc…
then you can simply move the camera to where you need it.
If you also use the “Point at” option on the Camera1,. and select your figure, then the camera will always point at that,. wherever you move it to.
Hope it helps