HELP! CMP Expert Grade - What to do with wood furniture?

Hello all! I recently picked up a brand spanking, newly reconditioned M1 (CMP did the resto work) and the wood furniture has no clear coat on it.

To protect the beautiful wood furniture, what do you guys recommend I use for a finish? Also, should I strip the whole firearm down and do the inside and outside of the wood or just tape off the metal parts with a razor and coat just the outside? My hesitation on breaking it completely down is putting it back together but part of me thinks it would be good to learn how to strip it down like that. I'm also somewhat of a woodworker so it wouldn't be my first rodeo on finishing walnut, but if I do the insides will the tolerances make it so it will not go back together nice and tight? It's just so perfect now I'm almost afraid to screw it up

I paid a nice chunk of change because I've been wanting one for a while and finally came across one that is in mint condition with a new barrel converting it to .308 and the nice CMP case and all the paperwork to go with it. Please, HELP ME! Thank you in advance!