I brought it to work today, figuring my co-workers were the best people to test the cake on. I was right, since 75 percent of the cake was gone within an hour. Turns out it was also somebody's birthday, so I made sure she had a slice as well.
Overall, I think it was successful. It was certainly edible (or "eatable" as I like to say). Too sugary for me, and for some others, but most people liked it.
So for next time I have to work on the inside of the cake, and also trying something other than fondant for the top layer, I think. It is, after all, pure sugar.