I have hunted for more than 2 months and have yet to find any of the decorations. I have emailed wiltons. and many other company's with no luck any help will be appreciated

These decorations have been hand built from components. The castle is the smallest part of the Wilton sugar molds that were discontinued 15+ years ago. The bridge and steps built from cardboard, patterns may be on the Wilton website pattern locator section.

http://www.fairytaleweddingstore.com/rcProdmain.asp?id=40
they might have most of what you are needing

I found this online,
This one is a 3 piece set consisting of carriage, castle and slipper:
http://www.craftisart.com/138714/3-pc-l-wedding-quinceanera-sweet16-cinderella-castle-carriage-and-slipper-light-cake-topper-in-white
Perhaps you could contact the seller and send a pic of the wedding cake to see if they know where you could find a stand similar to that one. If not you may have to use a multi tier stand that allows you to place them at varying heights and positions and fill in around the bases with tulle to resemble the "cloud" affect.