Pete, Welcome to ALR.... I'm also a new "builder" and agree with Mike, PPatch and others, and that advice should help you along. Looking at each image, it does look like there is a lot of work to do, and a lot of corrections to be made, and as a new builder, correcting errors are hard to do (as you know through your gunsmith work) I would ask myself the following:
1) Did you order a gun from a builder to be "in the white" and ready to go so you can finish and shoot it - if so, before you do anything, is give them a call and return it for what you paid them. there are much better ways to get a better rifle in the white.
2) If not number 1, was the builder a family member or very close friend you don't want to offend? if so, you can do some of the things suggested and clean it up a little, finish it and just shoot it.
3) Was it free or just handed to you? If that's the case, then I would play around with cleaning it up, adding some sort of finish and just shoot the thing.
If you are going to keep it - is the lock tight up against the barrel (no gap between the pan and the barrel side)? Is the barrel touch hole centered in the pan and level with the top of the pan? Does the half cock and full cock work smoothly without any binding of wood in the stock? Does the trigger have a little "play" in the half cock and full cock position? Does is spark? is the barrel tight in the barrel channel? These are some of the basics that no matter what you do to it, if these things are not either corrected or in place, doesn't matter what you do to it, it won't be a fun Deer rifle. if you can ensure it's safe, it operates smoothly, it's a "name brand" barrel and it's tight, then you either have a "Sorta rifle that looks like one from far away (Deer don't know the difference)" or a long and frustrating project ahead of you.
Interesting to see - send pictures of the lock, touch hole and make sure it's SAFE.
Jon