Pinstripes, Spiders, and Pastels are great CoDom traits which give you more than normal the first time they breed. If you like Cinnamons Black Pastels are super close and are in a ton of super nice morphs. Honestly there is no wrong choice, it's all preference. If you are interested in breeding them you should check out the Morph List by World of Ball Pythons and see what morphs make up the snakes you would like to "make" and go from there.
Soon you will find (as we did) that three years is a long time to go (time it takes hatching to be breeding size typically) not to add new snakes to your collection. I'm sure you will find that you will have two snakes one day, blink, and have ten lol
Good luck adding to your collection. I'm sure you will change your mind several times before you decide on what morph you just have to have.