Best ACT Prep Book for 8-10 point composite increase within 5 months.

<p>Hey everyone, I'm a junior in high school right now and looking to take the act for the first time in April. I'm not sure, but I think I got a 22 composite on my practice which is horrible. I'm looking to get a 30-32 and I'm confident I can within 5 months of preparation and studying everyday because when I set my mind to something I get it done. I'm looking at northwestern so I feel like since my GPA is only a 3.85 I'm going to need at least a 30-32 to get in while applying ED. Money isn't an issue so just let me know like the 5 best ACT prep books that can help me get this 8-10 point increase. Also, let me know my chances for NU if you can.
GPA-3.85
ACT-32(hopefully)
A bunch of Extracurriculars but just base your opinion on the act and GPA. </p>

<p>Please let me know. </p>

<p>Thanks!</p>