I am trying to make a cake topper for my daughters birthday party in 5 days and need advice. Would you do all fondant, gumpaste, or a mix of the 2? I am worried it wont be hard enough to stand on its own. Also, how thick should it be so it wont bend in half?

Attached pic of the desired look. 

Thanks in advance!!

AThe stand up toppers that I have done have been made of all gumpaste. I have even done them as late as the night before delivery and they are dry enough to stand without bending. I usually roll it at 1/8"-1/4" without issue.