Will do a WIP on this.
After a few attempts, settled on a profile I liked and profiled a blank. I can't spend too much time on it, so this one will be without a proper peened guard, but will have a guard-like feature.
8.5" long, 4" long blade, 1" tall, 3/16" thick stock in 52100. I haven't drilled holes in the tang yet, as I needed to get bolts first and measure the diameter, so I don't run into issues after I heat treat the blank.