Okay--got them done. I'm making mine larger than a tabletopper (6x the number of blocks). Not a lot of contrast, but I am going for a very soft look, if possible. (The top blocks seem darker in this picture than they really are.)
Bad news: Had to recut B and E, so if we need more B, I'm going to have to improvise.
Good news: The B/E half-blocks that were too small will be great to use in a border.