Welcome abroad! I'm only 5 years into my first build. (there were some days off)
There _is_ another option. Some makers sell "in-the-white" guns that are fitted together and functional, but are not finished, metal or wood. Tip Curtis usually has plenty of those on his racks. There was one of his ITW's on the classifieds here not too long ago, but I think it was a smoothie.
That option knocks your learning process down to finishing and that can be as complicated as martian astrology* if you want.
*
chinese arithmetic probably isn't pc any more.
And that gets you shooting/hunting sooner and you can learn all about it as you go.
If i was starting my first over today, I'd change a few parts. BUT I do have all the parts
ready to go for number 2 in house and ready to rock--right after season or I get my freezer full. It'll be a bit more "correct a mundo" and maybe have less goofs and do-overs. The learning of the actual making of the rifle won't get any better until you actually do it, but the learning of the reasons/styles/schools etc. has already started, and won't stop if you don't. cheers.