http://www.dakkadakka.com/dakkaforum/posts/list/423281.page
Take a look at that - unfortunately the guy kinda stopped.
I wasn't a huge fan of the wooden stuff, so I did something different in my version, detailed
over on Warseer
My biggest hurdle was the legs, I finally bashed some together out of odds and ends, and luckily mine's a Nurgle contemptor, so being rubbish doesn't matter much.
Your idea also sounds great, they generally look a little small and plain next to their modern counterparts (I was considering using mine as Terminators/Obliterators for a while) so anytghing that can add detail is a big boost.
Very jealous that you have a Crusade dread, by the way.