Considering churning for the first time, for the 150k CSR, how does it need to go?

I still use 90% of my points for Hyatt. I think all inclusives are an amazing deal even after devaluation, so I value chase points. Right now i mainly use csp and bilt and biz cfu. I want to take advantage of the 150k bonus on the csr right now, idk if I'll really have a use for it past the first year. But I've heard they can claw back the sign on bonus if you cancel? Ive never closed a credit card before. How would I go about this timing wise etc.? Thanks.