Sorry to rain on you parade, guys, but, the alternate heat treatment proposed will not, IMHO, allow you to realize the potential of that steel. I read that article too, and, from a metallurgical standpoint, that treatment might get you the hardness, but, not the rest of the microstructure that you really want. Altering a heat treatment process to suit the limitations of one's furnace isn't the way to go. The answer is, find the right furnace!! The same applies for BG42there, you need 2050F. There are high temp foils out there that will withstand 2400F.
RJ