With the base template, the book has you going up in 10 per cent jumps. I figure if your training max for squat and DL are between 440 lbs and around 550 lbs you're probably going to be fine making 45 lbs jumps right up until you're at 70 per cent or so simply because it is simpler than mucking around with smaller plates. Then you might want to start using five and 10 lbs plates and even fractionals once you're at the upper end. Same for press and bench, going up in 25 lbs jumps should be fine if your TMs are around 200-300 lbs, until you reach the 70 per cent mark or so?
I don't see how it would hurt, but hopefully Jim or someone who has done the template could clarify.