Baby first month / full month 满月

Hi guys I have a few questions to ask as I don’t really know who to ask… my family is not very traditional but I still want to do it. 1. Can me and bb wear black on the day itself? 2. Red eggs and ang ku kueh is a must…what about cake? Do I need to buy a cake? If yes what kind? The birthday cake kind or those small small pieces? 3. What am I supposed to do with the red egg and ang ku kueh…am I supposed to put it on a serving Tray for guests to take and eat themselves or am I supposed to buy individual packs and let them bring home? Tho individual packs prices are not on the friendlier side 4. Is ginger a must? What am I supposed to do with it…. Pls help!!! Thanks! Ok this one not important but does it matter if I order my balloons as “baby 1st month “ instead of baby full month? I genuinely think 1st month sounds btr but I think traditionally full month is the correct way to go