Ca+cs

hey everyone, I am a CA aspirant, I have appeared for IPCC both groups this may, the results are still awaited.. I want to do CS along with CA, I haven't got myself registered with ICSI yet, and my ITT and orientation trainings are also lined up in near future.. shall I get myself registered for CS now?? or shall I do so after my articleship starts?? moreover as per the new curriculum CS requires a training period of 3 years which is not possible for me after 3 years of articleship for CA, so will it hold any imporatnce if I do not do that CS training and simply clear executive and final exam?? if not, what shall be the other best alternative for me?? please help!!