2 years is pushing it for passing all ACCA exams especially with no prior experience.
This would be sitting 4 papers at 2 sittings and 3 papers at the other two sittings (even if you do F1 - F3 by CBE you can only take a maximum of 4 papers in any six month exam period.
It might be possible if you are studying full time or can devote most of your own time to studying whilst working.
I personally sat three exams in Jun 09, Dec 09 and Jun 10 (awaiting final three papers this time), it was really hard work as I work full time and have two young children at home.
LSBF should be able to advise you further and it might be worth carefully planning your progress and exams to sit in each six months window to avoid clashes etc.
Good luck in whatever you decide.