Which should I take first? SAT I or SAT II

I have only two dates to take SAT exams. I am taking ACT in December and wondered whether I should take sat 2 or sat 1 test fist (December) and then the subject test in January or the other way around, as you send off your application before January would it matter if I had the SAT I being sent in? (I am applying to ivy league btw)

As long as your university accepts sat taken in January you should take the one you are most comfortable in by December and the one you need more time in jan

do you know about ivy leagues?