tomc,
I don't have any specifics on your gun but here's some opinions.
+Take clear pictures during the disassembly. Use ziplock bags for each part and a sharpie to label the bags (left hammer, etc).
+Re-assemble it once before you start the metal phase of the project - it might be a while before it's done and one re-assembly in the memory bank is a good thing.
+Anneal the reciever before you start the pre-engraving polish.
I'm hesitant to re-color case, even though pro's do it every day. Heat warped frames seem to affect us amateurs with perverse regularity.