Sitting for four papers in September 2016

I am not enrolled in any other courses at the moment and have taken a leave out of everything so that ACCA is the only matter I can focus on. I will have two solid months to prep for it. It will be possible to pass all four right? If I work hard enough of course. Planning on F7 F8 F9 and P1.
F7 and F8 will be repeat papers from last year so although I do know the source material I must redo the course work cause its all rusty.
It will be all self study with Opentuition and BPP exam kits , passnotes and study text.
I did attend classes for F7 and F8 last year. Should I enroll somewhere for P1?

🙁