Grenadier, . . . just a suggestion, . . . take a look at motorcycle chaps, . . . or commercially produced Western chaps.
The reason I suggest that, . . . they will have both the leather and the hardware you need. Buy a pair that is knowingly and for sure TOOOOOO big for you, . . . then you can cut them down, . . . decorate them, . . . and re-sew them to your hearts content.
I just bought a little over $200 worth of leather for chaps for two young ladies, . . . small ladies, . . . and they will barely be enough leather, . . . and that is before the bling, buckles, zippers, etc.
Good luck, . . . I am almost done on mine, . . . I'm not a stickler for authenticity, . . . got a good deal on some suede, . . . am using it for mine.
May God bless,
Dwight