Not sure it makes any sense to make possible hets. I do like pastel lesser clowns and all combos of those morphs but breeding a het to a pastel lesser to breed back and hope you picked a het seems like it could amount to a huge waste of time if you don’t get lucky. I personally would hold out until you find the right visual. You would most likely get visuals your first clutch. Not only will that be rewarding in itself but you would also have so many more options for the next future pairing.
if I had to choose from your choices though, I would go with the pastel lesser because you’ll at least produce some beautiful combos, you might just have to wait a very long time to get any visual clowns.