cs + cwa and after that ca, u can do this way. sorry for previous misguidance. but there is a big problem. there should be seperate article experiences for ca,cs and cwa. and cs syllabus includes lots of theory preparation, latest knowledge of cs taxation paper( better than ca but they ask theory most of the time so u can escape.), and your law concepts should be very much clear.
cs articleship = after passing cs professional final 1.5 years
ca articleship = befor passing ca final 2.5years
cwa articleship = after/before passing icwa final 3 years
dont take me wrong but i am giving all advices considering u r average student. first try to complete cs or cwa. so that u can command more stipend at the time of your ca articleship. and u wont complaint of stipend for your whole articleship period like 90% of the ca students do. after cs or cwa u can even try for big 4 articleship.