I have been told that the correct answers to my questions are as follows:
1A) (18.0 + 0.8 + 2.5) = 21.3A
21.3A * 208V = 4430.4VA
1B) 4430.4VA / 2 = 2215.2VA PER PH LEG
2A) Use name plate rating 8A * 120V = 960VA
3A) Use name plate rating 12A * 120V = 1440VA
4A) Emergency lighting is considered part of the general lighting load.
5A) 225VA per 4 Lamp 2'x4' Fluorescent Fixture
Feel free to comment.
Thanks,
--Mario