I you're in this for one gun I'd have somebody build it. If you're considering a gun building hobby than you might consider doing your own, of course it will be years and quite a few guns before you're satisfied with your work...
Pretty much says it all, right there, other than which/what kits are viable options for a first-time/one-time build.
I'm only (struggling) with learning to build due to a life-long desire to build my own, and a recent change in employer that unexpectedly enabled the addiction... but just getting set up is a lot more expensive than I'd expected, despite never having any intention of ever earning a living off my product, and even after a 45 years of dreaming and planning.
Reference materials alone can easily run into several hundred - or several thousand - bucks, right there: nobody seems to have done a reference that dwells solely on my two primary areas of interest, so I find I'm buying many references by a variety of authors, and comparing their 1- or 2-page studies of a very few rifles to learn the subtle traits that stamp them for their schools of origin.
On the other hand, I'm getting closer to producing what I wanted to produce.
So: I refer you to Mr B's comment, above.