Niky ... I dropped you a Private Message.
Big Dog .... Any foods low-fat are game. Early on in the carb-up you will want to eat foods that are higher on the glycemic index. These typically temd to be sugary foods or refined grains.
Later in the carb-up, switch to foods that are lower GI.
So, going by your list ...
Fruits - minimize fruit intake.
Grains - refined early in carb-up ... whole grains later
Donuts - unless they are low-fat, no
Chocolate - unless it is low-fat, no
Potatoes - baked potatoes (white) early in carb up, yams/sweet potatoes later in carb up
Veggies - yes. And you can have carrots on carb-ups!
Cereal - yes. Check glycemic index lists to see where they fall. Cron flakes are higher GI, whereas Museli is lower-GI.