Quote: " how would be be able to have text appear on the screen during the cut scenes and during the game play? "
Display the HUD while you are recording the cutscene and it will be in there.
Whether recording or playing the game, if you use the game for recording your cutscenes then the method to displaay the HUD is the same.
Like Dude232 said, you can use FPSC (X9 or X10) for doing the cutscenes.
X10 has built in camera fly mode, but you can script some basic camera controls for X9 like the camera lift script in my puppet script thread.
If you have X10, then that would make nice cutscenes for X9 because you could record the ragdoll, bloom, water, and other effects in the cutscenes.
Quote: "as i dont think ill be using voice acting -"
I guess most kids playing shooter games can read anyway.
However, voice has advantages over text when considering dyslexia.
Hearing is faster than reading too, and allows us to maintain our eye focus on our thousand yard stare.