Late to this convo but honestly I just light em all. I had like 3 cakes left over after the 4th and a bunch of rockets. Went out on the 5th with some buddies and shot the rest. Kinda nice actually, no pressure to put on a “show” — just relaxing and lighting stuff. Weather was good too. Save em if you can store em right but honestly I say just have another mini-party lol.