I am also doing job as an Accounts Officer in a reputed group of Companies.I am also facing such type of problem because in company you have not enough time to study and even they dont gives you so much leave in exam days in such situation you have to drop your job.
In CA firms your Boss may be allow the leave in exam days, he can understand your problem because he is also a CA.In CA firms they have seasonal work like pressure in sept and March remaining months are not so much busy.
I think you should complete your group2 of CA final because if you become CA then job and salary package is not a problem for you.After CA your salary package may be around 5 lac to 6Lac P.A. and may be more because prior experience before ca also gives you advantage.
i can understand your problem because i am also facing such type of problems. You have to balance both the approaches job and Study.You are very Near about to become CA it is your last step in CA Money should not be deciding factor at this level.