CPM-154 is a stainless steel that makes superb knives. You can't HT it at home without a HT oven and some experience, but you can send it out and have the HT and cryo done for $10-15.
I like the design now, but have a question about the black dot on the handle. Is that a rivet hole? You should use two or three rivets/bolts on the scales on such a handle, with the end rivets about 1" from each end of the scale, and the other in the center. Play with the placement until it looks right. making a cardboard cutout and holding it in your hand can help a lot in designing a blade. Draw the front of the handle on the cutout and decide where the rivets should be for the best look. Save the cardboard cutout as a template for cutting the steel and making more knives later.