I'm not sure if you are informed that you actually need to indicate the class in your family banner too. For example, if 1E1 and 1E2 is in your family, you have to paint "1E1" and "1E2" in some part of your flag. Make sure it is visible from a distance. Same goes for individual class boards, the class have to be there.
For the time being, just think about where you wanna put it as the exact classes are not confirmed yet.
Anyways, good job for F3. :) F1, where are you? ;)
Zhong Rong.