<p>While SAT IIs are optional for ACT takers, they will definitely help show off your knowledge if you can get two in the mid 700s. I’d say it would hurt you if others with similar ACTs took SAT IIs and scored well on them (it would help them jump over you so to speak). You could try and take them blind and send them straight away (pretty risky though), or if you are super paranoid take them and apply RD.</p>