Pick the morphs you love, because if you can't sell the babies you will be keeping and feeding them until you do, which could end up being the life of the snake. It sounds like a pied, mojave and butter females would be a good start. Your super pastel to a pied would give you all pastels het pied, hold back a male or a pair and you would have a great start to pastel pieds! Multi genes are always a good idea if you can afford them because it opens up what you can make. It really depends on what you are willing to spend, but whatever you do, pick the best example of the morph your looking at.