The selection is perfect - the peach and light yellow are great and I can't wait to see how they're going to look to blend the penguins.
The only thing I'm not sure about is the arrangement of the purples. I think the choices are fine, just need to play with the arrangement a bit. What is throwing me off is that both value and color have to be balanced. Some of the purples lean toward the red scale, some lean toward the blue scale and if you put them together according to color you lose the value scale. If you arrange them by value, you lose the color scale. This is one instance where a green viewer is helpful as neither red or blue are going to cut it for me.
See if you can find or make a green viewer - an empty wine bottle will suffice. If you need help emptying the wine bottle give me a call :)