@Katana: Hmm thanks I'll set those units up. @m4dcow: I'll look into that. I made a similar script but they weren't bind to hotkeys. Still need to solve the zoom issue though.
In maya I made a script to increase/decrease grid divisions and set those to a hotkey. For the clip frame problem up the near clip also, I have mine set to 1 and far clip to 100,000 and works fine for decent sized UDK levels.