These are great ideas and I will support your efforts. That said, I am changing car insurance for my 4 cars, but I am keeping a Credit card with them that I never use. That way I am still a member, but they get NO MONEY from me.
Check into Donegals Insurance. Saved a literal mint when I changed. They use your credit score in underwriting. Who knew people with great credit scores and no debt were low risk responsible people. ;-) (Home insurance too as well as liability umbrella... Tough underwriting but spectacular rates)
https://www.donegalgroup.com/findanagent/index