Hmm... good question on the coat. I've never seen a design like that before, but I've mainly looked for sled dog gear. One thing I know a couple mushers use is an item called a belly blanket (I believe?). It's just what it sounds like. Used in conjunction with a regular coat, it might provide full body coverage, with just the legs and head exposed.
As for boots, I use fleece booties from
www.dogbooties.com - they're made for sled dogs, are inexpensive and fit well. My advice is to buy at least 2 sets since they're not too pricey. If you're looking for a more durable bootie to wear on gravel, rocks, hiking, etc., go with a Cordura instead of fleece bootie. I hear the Cordura 1000 holds up fantastic!
Hope this helps!
Hey - just found this link that sells custom dog coats! Maybe they'd be able to make you what you need.
http://www.angelfire.com/co4/cozyhorse/dogblanket.html
