<snip>the problem is, (as all laptops do) have numpad.
What does that mean? Does your laptop have a numpad or doesn't it? Many laptops have one, many don't. If your laptop hasn't got one and you'd like to have one, cheap USB numpads are available. Or you can plug in a whole USB keyboard if you like.
However, as Triton and Fugi already mentioned, any button can be mapped to almost any task. Your post gives a hint you have found it difficult to reach the right side of the keyboard (numpad etc.) with your left hand because the stick is on the way... Since the days I bought my first joystick - a Logitech by the way - I have mapped one button in the base of the joystick to look straight up which in combination with the hat works in all directions in the up 45 deg angle. I've also mapped one button on top of the stick to look front up because that's where I look when I try to turn inside the opponent.
Am I understanding you correctly that you've been flying without a joystick until now? If so, you'd have to calibrate the throttle in AH to get the RPM working better than on-off. Problem in reaching zoom goes beyond my imagination. Z shouldn't be hard to reach with your right hand on the stick and left on the keyboard. Unless you mean adjusting the zoom or zooming on the clipboard map, the default buttons of which are on the right side of the keyboard.