Thanks for the kind comments, everyone!
To answer grunt1's question, the Balkenkreuz are decals from John's Stuff. (I still have fragments of several sets that I keep around for various projects). Using Micro Sol to set the decal and then a spray of dullcoat after it dries helps blend the decal pretty well. I wish I had small lettering and numbering to make the ID plate, but that will have to be another custom...
Helicopter Pilot, the Kettenkrad kit from Shapeways (including vehicle body & front wheel set) costs about $88 and the trailer costs about $24. You'll need paint, but not really any glue. I got the kettenkrad during on of the 20% off sales and so it cost me a bit less. Lots of great stuff to order - and build - from grunt1's site:
http://www.shapeways.com/shops/battlegroundtoys?s=0