<p>I would suggest that you take at least two SAT IIs. You don’t yet know which schools you are applying to and some may require SAT IIs. You don’t want to have to drop schools from your list because you didn’t meet a basic requirement for applying. In addition, many schools will require you to take foreign language courses if you don’t get a certain score on your SATII language test - so for that reason alone, it might be worth taking the test. You don’t want to end up using up valuable course slots taking classes you aren’t really interested in. And as a CS person, math is an especially good subject to take an SATII in.</p>