Hello Shashank,Look As per my personal experience , Well no one is perfect even being a well recognized jee institute it is not that the entire stuff is upto that mark in their material . There are some flaws their material.As you mentioned your concepts are so strong, So its all upto you if you have a enough time to do practice on Ms chauchan then go for it . (https://nation.com.pk/15-Oct-2018/practice-makes-a-man-perfect)

Note -  As we know practice makes man perfect

Hope it helps

All the Best !!!