I would say that the BPP Revision Kit is excellent and good preparation for you if used in conjunction with the study text and or the Open Tuition material.
The Study Text can be very overwhelming and although covers every possible thing that could be examined, it is not essential. So you should be able to prepare well with the P&R Kit and Opentuition material.
Ultimately question practice, question practice and more question practice will get you through! Please do listen to the lectures.