Incorporating the 5lbs Book in the 1 Month Plan

Hi!
I have heard a lot about the importance of completing the quant section in the Manhattan 5lbs book. Today, I started the infamous 1 month plan and was wondering if there was a way to incoroporate the 5lbs book within the plan. I was wondering if it would be a good idea to supplant the GRE Big Book with the 5lbs one? Any other suggestions would be much appreciated.

If you’re confident in your math foundation then you can replace big book with 5lb or if you got extra time on your hands then also you can add 5lb to your schedule.