I have to make a topsy turvy cake. My first one! This is for family. I already know I will be running short on time. I was thinking that possibly I could purchase cakes from the bakery and cover these in fondant. I know these will not taste as good as what I could make at home but figured everyone will just have to deal with it. However, I know the cakes we have bought from grocery stores are usually sort of soft. Do you guys think I should be concerned they wouldn't hold up under the weight of the fondant well? I may be worrying over nothing but didn't want to plan on this and end up with cakes falling apart. Thanks for anyone and everyones help.