dear neville
both grpis always advisable because
1.the charm of clearing both grps at once cannot match the delight of clearing one grp at a tym,in short it will satisfy your inner self,will immensely boost you
2.every student has some strong papers as well as some weak papers,infact some questionpapers would be very simple and some would be completely unpredictable,so both grps would even ur chances of making out.the problems of agreegate would be sorted out.
3.well the tym does get divided,and yes its very difficult to manage the pressure of both grps as compared to one grp,but c'mon does easy things attracts us.definately no,,,,,,,,,,,the point that many ppl clear it is a prove that its definate;ly possible
manage your tym,draw a time table,and stick to it.do leave some margin for contiungencies
4.thr is absolutely no lineancy,its a myth
5 i have focused on nov because you are left with ample tym to make a strategy and execute it,time is in your favuor so dont lose a chance
all the best,aim high............certainly possible
Donot let negative thoughts bog you down,stay positive and think positive