hey frnd it never matters that how many hours u study.. what matters is what u stdy in that time... dont think that if u r giving 5 hours than it will be difficult to crack both groups.....
but as far as ur situation is concerned i will suggest u not to attempt both groups just try the first group only & concentrate fully on that.... u will get the success.... 3 months r left and if u try hard & study hard than u will surely pass in frst grp.. but try to increase the study hours fastly.. give more of ur time to study rather than anything else.....
REGARDING XAMS- TRY TO ATTEMPT THE WHOLE QUESTION PAPER.. MOST OF THE STUDENTS GET FAIL BECAUSE THEY DO NOT ATTEMPT THE WHOLE PAPER.. 3 HOURS R ENOUGH IF U KNW THE TIME MANAGEMENT,... IN A/Cs, COST FM, PAY MORE ATTENTION TO THEORY.. SINCE IF U WRITE THEORY U CAN EASILY GET MARKS ON THAT BCZ BOTH OF THESE R PRACTICAL SBJECTS.. IN LAW U SHOULD TRY TO WRITE SECTIONS AND THE PROVISION.. FIRST OF ALL WRITE THE PROVISION CONCERNED THAN THE QUESTION MATTER AND IN LAST THE CONCLUSION.. IT IS THE BEST WAY TO SCORE IN LAW..
ENJOY STDY,, HOPE SO... IT CAN HELP U A BIT..
BEST OF LUCK