Yes #101 looks seems to have potential ... But i can't image how the Icon will look - will the icon be to "simple"? Can you extract the U into a icon maybe? And maybe the stairs in a gray (on the blue design you have paint the stairs ligther than the rest ... )
Hi I didn't get a chance to show you versions with colors and a standalone icon (which I think would look great) before judging. If you want to see variations from any designer you can rank him first in judging so he can submit and then rerank as you wish.