Cremora fireball with signal cannon?

Do I need a secondary ignition source for a creamer fireball if I’m also using enough BP and wadding to get a big boom?

I have a thunder mug with a 1.75” bore that I usually use with about 60 grams of BP. That charge, nicely packed plus wadding will general give a fantastic boom. I’m wondering about adding creamer on top of the wadding but I’m concerned that the creamer won’t ignite. Can anyone share some wisdom? I could probably run a secondary fuse into the creamer but that seems like overkill?