You are correct about your new Boker. Start with a low number of strokes. You can always go back and do more if the smaller pyramid didn't work for you.

Actually, if it's a factory edge, you should try shaving with it first. If it pulls, see if a good stropping brings it into good shaving shape. If it still pulls just start with a few very light strokes on the 8k side of your Norton. No need to drop back to the 4k and pyramid until you're sure you can't fix it with the 8k.

Good luck, senor.