Welcome to the wonderful world of CAD As a newbie myself, I was full of questions the first day too.
1) from what I've read in the forums, a lot of people have an insulin response to just the taste of sweetness even if it's not sugar. It's a YMMV thing, but just to be sure since it's your first day, maybe you should leave the sweetener out for now.
2) The entry plan is two CMs and one RM. Later you can modify it, adding a complementary snack, or if you're not hungry, just having one CM and then RM.
3) That sounds good except for the miracle whip- it has lots of sugar! Best to stick with the mayo.

Good luck and keep us updated!