What should I buy?

Hey so I have the whole starter and it's all painted up. I am able to pick up some more stuff. I know I want to get Miles/Gwen and Venom as well as Hulk. I can probably get 2 other sets I was thinking Black Panther and Modok. What are thoughts. Mainly will be learning with wife and playing that way til post Covid, then will be mainly teaching new people. My friend's don't play miniatures games yet.