You should definitely buy Bootcamp (in general), Destroyer (in general), and for QR specifically Math Destroyer (I did not buy it... but have heard great things about it).
Bootcamp's QR is a bit more difficult from what I hear, but it'll definitely help you think outside the box and being over-prepared is never really a bad thing. If you have a good foundation in math and have done well on SAT-leveled math, you should be fine.