ACCA P4 in September 2017 session

Hello Mr John Moffat! Thank you very much for your reply in ACCA P4 forum. 🙂
I was wondering if you could advice me on whether I would be ok to sit for p4 exam in september. I failed p4 in june session with over 30 marks and I’m not sure whether to sit for p4 exam in september. I plan to sit for p4 only in september if ok. I have no work or personal commitments in August and can fully focus in p4 studies. I have bpp and lsbf exam kit in hand now valid until june 2017. I can fully focus on p4 studies for the upcoming month but I’m not sure whether I’m ready for it. Please please could you kindly give me an advice?
I’m now watching the OT video lectures and they are very good. I plan to watch it twice before the sept exam to get myself ready.

Thanks so much!