EmperorFool
Deity
. . . but can I also say that I do not notice a change in War Weariness, even after ending a few turns?
That value probably only affects WW from new actions, so you'll need to kill some units, die, or take/raze cities to see an effect.
I also want to change . . .
Yes, you can make multiple changes in that file. It won't conflict as long as the changes you make are sound. As for what effects you'll see when what values, that's an area for others that have made such changes. Maybe try the C&C (general modding) forum.
As far as BUG/BAT are concerned, well, they're not.

You have a good idea to change the value to something outrageous so you can see the effect quickly.