I think I found all the parts I "need" right here on the site:
Lower Spray:
AP3875429
Wheel Stud:
AP4355749
Wheel:
AP3193024
Mid Spray:
AP3861005
Upper Spray Arm:
AP3883898
But just confirming that missing wheels and clogged spray arms would be my issue? Anything else I should be considering…like "How did they get so clogged?"