Cake and desssert bar?

So I want to do cake and a dessert bar. My boyfriend and I eat a lot and I’m big into sweets. My mom thinks I’m crazy. How is the best way to go about this or should I ditch the idea? I was thinking of putting out bags/boxes so guests can take the dessert bar items home as a favor. If weee having cake how many items in the bar should we have? We want chocolate covered strawberries, cookies and rice krispy treats. Like the fancy ones dipped in chocolate and stuff