What process will you use to make the drawknife? I am assuming you will be forging, simply because the springs would take hourse of stock removal.
If so, forge to shape, triple normalize (optional triple anneal), grind, normalize, harden/quench, temper around 325 for draw knife and 350 for camp/bowie knife. Final grind, polish, mount, sharpen, etc.
As for temps, normalizing, annealing and hardening can all be done with a magnet. When the steel goes non-magnetic, it has reached critical temp. Some folks normalize at slightly past non-mag, and anneal slightly before. I gave separate tempering temps. because a draw knife can harder than a knife that will see chopping duty. An excellent way to ponder edge hardness was taught to me by my teacher JD Smith--he learned it from Jimmy Fikes--and it goes as follows:
"The primary consideration for a tool is that it hold an edge; the primary consideration for a weapon is that it not break."
Of course, many knives are both tools and weapons, and this is where the true fun and mastery of bladesmithing begin. You need to selectively incorporate different qualities into a single blade to come up with what Ed Caffrey calls "the overall package." The drawknife, however, seems to be pure tool--so a hard keen edge is a good thing.
Hope this helps,
John