I would do things pretty much as I have done in the last 30 years. I started with production firearms, then, about 20 years ago, I started upgrading. All I own and shoot now are custom muzzleloaders...but I darn sure couldn't affod that when I started! All my rifles and pistols are: extremely accurate, beautiful to behold, (at least to my eyes), worth a lot more than I paid for them, historically accurate and most are replica's of original, existing rifles or pistols.
If I still used production firearms I would own a GPR in 54 cal., same as I did years ago. I've owned; TC, CVA, Lyman, FIE, Numrich, Navy Arms, Dixie Gun Works, Pedersoli, Uberti and probably a few others I've forgotten. All were ok, some were very good and a few, (the Lyman's) were exceptional for production firearms.
Vic