1. I'm not so sure as to the relocating the entire map, i think TGC should patch that and make it so you start in the center so this dosnt happen in the first place
2. Items? As in weapons? If so yes, all weapons are kept.
3. No there are not any released, you could do your own quite simply in Milkshape 3D, cheap and easy to use
4. Yes, open the script Pace.fpi or Pace10.fpi
Cut out the portion that states if the player is seen they will shoot at the player. He should follow waypoints without attacking the player.
If you don't know waypoints, there are buttons up at the top that either add a waypoint or put you in waypoint editing mode, shift click a waypoint to create the next point, shift right click to delete
Have fun and welcome to the forums