Since it has to be free of profanity, I really wonder what would set Trump off for how annoying the tweets would have to be to get them blocked. Would saying "you're a soggy Cheeto" gt someone blocked? or "my grandpa looks better than you and he's dead?" like really, what do you think would cause Trump to block you?
If you go for it, go for the kill. Don't just insult him, roast him so bad he gets a proper skin tone.