@aral@mastodon.ar.al sounds good - and it's also good for those on those instances to know that they can't actively reach out to many people in the program if they stay there.
mastodon.uno to be honest is a bit more nuanced. I've spoken to the admin and he's generally supportive of gaza-verified. But they decided to suspend accounts who only ask for donations through mentions. Which is understandable, but IMHO rather than suspending they may just limit them, so anyone who is already following them on their server won't lose the connection.