General ACCAWhich Should i Attempt F6 or F8 for december?

Hi All, I have attempted F6 in June and i was not able to clear as i dint had good preparation in the paper i am planning to attempt this in december again but i heard F8 is but easier than F6, if i clear a paper i can leave my job and prepare as i have make my parents believe than i can pass this course. Could some one please advise as i dont have time more than 4 hr a day excluding my daily works. Thanks Kaushik