First congrats on the cake orders! I haven’t done a taste test yet but are you planning on charging for the tasting? I would, since it can cost alot of money. Maybe limit the flavors to 3 choices. IMO I would cut them out of a sheet cake and into a small squares. I feel like you get a better balance that way than making a mini cupcakes, maybe I’m crazy I probably am but thats just how I feel. If possible maybe do multiple tastings on the same day at different times for the brides so you can bake less. I HTH some!