I am horrible at deciding on patterns, which is why I frequently go for kits, if they are in my color choices. Some call it lazy, but I've been called worse. LOL
I have the purple and love it. I love the florals and think a soft pink would be a good addition, but then a soft taupey green would work too. I also agree about not making the blocks too small so you don't lose the scale. An easy pattern would be to just alternate solid blocks of each fabric, or the two florals, sashed with the purple.