Can I apply for CS as double major?

Hey! Rn I’m debating between Umich and UCSB and my major is Econ. However I wanna get a double Major in CS also. It’s pretty easy to apply to Umich but idk about UCSB. So it is competitive to apply? And it is doable? (Workload, stress, etc). Also what school should i go to LOL May 1 is coming up soon and I’m still stuck between the two (I’m planning to go to grad school)