At this moment I have only 3 ball pythons - a piebald and a butterpastel female, and a bumblebee male.
Soon I am going to add another python to the collection, and my thoughts are
1. lemonblast female to pair with the bumblebee
3. clown female
the above seems good start, apart from:
i'd sell the male bee, and replace him with a killer, simply because everything will be pastel+
and when put to your visual recessives, you would get pastels and bees het pied/clown