Is it going to look bad if I go to a bootcamp with a computer science degree?

Definitely not. You can always exclude the bootcamp from your resume if it was harming it, so focus on what skills you are missing from your next step and if how a specific bootcamp will address those. Tech Elevator is great in the non tech large cities they focus on. But cast a wide net and consider options. Look at Codesmith, Rithm, Hack Rector, and look at career accelerators like Pathrise, Outco, Interview Kickstart and Formation (disclosure: I'm the co founder).