satanite is for W2. I won't attempt hamon on 52100 until after I visit you.
I generally tend knives thicker at the spine near the handle, so stock I am interested in is 1/8-3/16 range. As Butch suggested, grinding excess is not an issue.
Please take a note that I am a complete noob in this field, though I have been reading, talking, and thinking about the subject of knife-making for a long time. I suspect it has to do with a procrastination, but I like to call it 'being cautious' and approach new things with small steps. So, anything you guys are willing to share is appreciated.