Ca cs regular bcom hons

hey.. i hav cleared my ipcc with regular bcom hons from hansrah college..i still hav 1 1/2 year left of my regular college to finish after which i can pursue my articleship of CA. so i planned to give the executive level of CS in this spare tym . and then aftrr articleship and CA final,can complete my CS. is this a fruitful decision? is CS training compulsory in this scenario? can CS training be skipped with such a plan? anticipating good advices..