Here's a couple of tips for the wooden kits (thought of while lying awake last night at 3am.)
1. If you are doing the board-and-batten version, you can't easily finish the coach sides after applying the battens. Make sure the sides are well sanded smooth, and maybe seal them before applying battens.
2. You need 1/4 round at 1/4" radius (?) for the corners, which isn't easy to find. I made my own fron a 1/2" round dowel screwed to a wooden stick (to hold it still and stop it rotating.) I fed half the dowel through my mini table saw and then turned it 1/4 turn and cut again. I got enough 1/4 round to make the coach end corners.
I looked through the rest of my photos but there was nothing I noticed outside the instructions for the styrene versions. Lots of little clamps are useful to hold things while the glue sets, especially for the roof curves.