Do you have the TPR Hyperlearning science workbook? I would buy EK bio 1001 anyway because it is a great source for practice. EK bio 1001 + TPR hyperlearning bio Qs = gold.
The amount of practice offered in the EK Bio 7th is not enough. If you're just looking for practice problems, go with EK 1001 Bio or the TPR Hyperlearning Science Workbook.