Ca final and mba

I have already given group 1 of CA final twice and didn't clear the first time and i'm pretty sure i won't be clearing it this time either when the results will come out in ten days. I wanted to give CAT this year, so i was thinking of giving group 1 of CA final and then CAT. Since group 1 exam ends on 8th and CAT 2018 is on 25th November. So right now i can start preparing for both CAT and CA final group 1. Is this a good idea? Or should i just stick with CA. My majority of final group 2 coaching is left and hence i can't give both the groups of CA final together.