Saltland,
you've got the basics, and they will see you through the nuts and bolts of your build. Here are a few suggestions, broken down into different subject areas:
Engraving:
"Engraving Historic Firearms" by John Schippers. This book is great for learning engraving, and also has some fantastic photographs of more than just engraving. It also will give you a primer on rococo design.
Both Jack Brooks and Wallace Gussler have engraving videos. Both are good, and watching someone do it is the next best thing to personal instruction.
Carving:
Gunsmith of Grenville County gives you a good, short start on that.
There are several videos out there, to include Jack Brooks' video and several others. Look at American Pioneer Videos.
Building:
Look through the tutorial section of this forum. There is some amazing stuff in there.
Also, if you want to build a rifle that looks right, then you must spend a lot of time looking at original rifles either in person or in pictures. Spend a lot of time looking, really looking, at the architecture and details of rifles. RCA Vol I,II are great resources. Also spend lots of time here in the ALR library, again looking at the particular details of the school of rifle you intend to emulate.
Slow down. Study the proper order of building and then think about what you are going to do. Read the section of your book, and then do it.
When in doubt, ask questions here.
Let us know how your build goes!
Cheers,
Norm