Press F10 to toggle from clickable cockpit to mouse view mode and you don't need to hold the button.
The little joystick on your stick needs to be set to mouse emulation, if it's and X52 or X65 from Saitek I think that's the default. If it moves your mouse cursor when you're out of the game, it's set that way. In game, press F10 and the stick will control view. I use my X52 that way, just as I did in earlier IL2 games except for having to toggle to mouse view by pressing F10.
As for mouse speed, mine's pretty much exactly as it is in IL2:1946. In conf.ini (...Steam\Steamapps\common\il-2 sturmovik cliffs of dover\conf.ini ) there's a section for mouse sensitivity, mine looks like this: